diff --git a/dockerimg/createdockerfile.go b/dockerimg/createdockerfile.go
index e6752fe..9c50e2b 100644
--- a/dockerimg/createdockerfile.go
+++ b/dockerimg/createdockerfile.go
@@ -44,6 +44,8 @@
 	return hex.EncodeToString(h.Sum(nil))[:32]
 }
 
+const tmpSketchDockerfile = "tmp-sketch-dockerfile"
+
 const dockerfileBase = `FROM golang:1.24-bookworm
 
 # Switch from dash to bash by default.
@@ -97,6 +99,7 @@
 
 LABEL sketch_context="{{.InitFilesHash}}"
 COPY . /app
+RUN rm -f /app/` + tmpSketchDockerfile + `
 
 WORKDIR /app{{.SubDir}}
 RUN if [ -f go.mod ]; then go mod download; fi
diff --git a/dockerimg/dockerimg.go b/dockerimg/dockerimg.go
index 6164a31..0a070cf 100644
--- a/dockerimg/dockerimg.go
+++ b/dockerimg/dockerimg.go
@@ -662,7 +662,7 @@
 		if err != nil {
 			return "", fmt.Errorf("create dockerfile: %w", err)
 		}
-		dockerfilePath = filepath.Join(cwd, "tmp-sketch-dockerfile")
+		dockerfilePath = filepath.Join(cwd, tmpSketchDockerfile)
 		if err := os.WriteFile(dockerfilePath, []byte(dockerfile), 0o666); err != nil {
 			return "", err
 		}
diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
index 0fda28c..e91413f 100644
--- a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
@@ -7,8 +7,9 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="1f68d38855871143c58b80c7f052e42141dd82d9a1214074ee734f758f463b8a"
+LABEL sketch_context="3226456072fc35733ff1b5e0f1a4dfc06bceafcf8824dbbb80face06aa167285"
 COPY . /app
+RUN rm -f /app/tmp-sketch-dockerfile
 
 WORKDIR /app
 RUN if [ -f go.mod ]; then go mod download; fi
@@ -16,12 +17,8 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-# Install common development tools
-RUN go install github.com/rakyll/gotest@latest || true
-RUN go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true
-
-# If there's a requirements.txt file for Python deps, install them (continue on error)
-RUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi
+# No additional commands needed for this simple Go test project
+# The base Dockerfile already includes all necessary Go development tools
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
index 08505fb..23adfaa 100644
--- a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-3986 2050
+4024 1901
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3789
+Content-Length: 3827
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
@@ -15,7 +15,7 @@
    "content": [
     {
      "type": "text",
-     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
+     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\nRUN rm -f /app/tmp-sketch-dockerfile\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
     },
     {
      "type": "text",
@@ -53,25 +53,25 @@
 }HTTP/2.0 200 OK
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
-Anthropic-Ratelimit-Input-Tokens-Remaining: 81000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T16:52:00Z
+Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T19:55:29Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 76000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T16:51:31Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T19:55:32Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-05T16:51:23Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-05T19:55:28Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 157000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T16:51:31Z
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T19:55:29Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 93b1be08fc68fad2-SJC
+Cf-Ray: 93b2cbb08ab515f7-SJC
 Content-Type: application/json
-Date: Mon, 05 May 2025 16:51:28 GMT
-Request-Id: req_011CNpjEj9MJxyo4RVroVwds
+Date: Mon, 05 May 2025 19:55:32 GMT
+Request-Id: req_011CNpyGujGv6eewDja4g5Ee
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01G9fGvikz59pJJxdxeyibP8","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll call the dockerfile tool to create a Dockerfile for your Go project based on the provided template.\n\nFrom the README.md, I can see this is a simple Go test project without any specific additional requirements. Since it's a straightforward Go environment, we can keep the extra commands minimal."},{"type":"tool_use","id":"toolu_01WwjhsAp3VFWE514CpW6GCJ","name":"dockerfile","input":{"extra_cmds":"# Install common development tools\nRUN go install github.com/rakyll/gotest@latest || true\nRUN go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true\n\n# If there's a requirements.txt file for Python deps, install them (continue on error)\nRUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1312,"cache_read_input_tokens":0,"output_tokens":217}}
\ No newline at end of file
+{"id":"msg_01FRKiayPrFbD6HCNFk6RhDS","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the provided information, I'll help you create a Dockerfile for this Go project using the dockerfile tool.\n\nSince this is a simple test Go project without any specific requirements beyond what's already in the template, I don't need to add many extra commands. The template already includes the essential Go development tools and environment setup."},{"type":"tool_use","id":"toolu_018ADQAYzXuVBBSvfwB3WKV6","name":"dockerfile","input":{"extra_cmds":"# No additional commands needed for this simple Go test project\n# The base Dockerfile already includes all necessary Go development tools"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1326,"cache_read_input_tokens":0,"output_tokens":147}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
index fc93635..55e9245 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
@@ -7,8 +7,9 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="1dc5390aeffdde5c41adc1f9d349206d7cdf1bf607e7dd1f4fd7d6f6b8c3be12"
+LABEL sketch_context="852a43dfbf76c6272f41ade86ac1b4567acb77141edfec6c1df20b07a4758d1a"
 COPY . /app
+RUN rm -f /app/tmp-sketch-dockerfile
 
 WORKDIR /app
 RUN if [ -f go.mod ]; then go mod download; fi
@@ -16,7 +17,19 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-RUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi
+# Install any Go tools that might be useful for development
+go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true
+go install github.com/rakyll/gotest@latest || true
+
+# Install Python dependencies if needed (with error handling)
+if [ -f requirements.txt ]; then
+    pip3 install -r requirements.txt || true
+fi
+
+# If Makefile exists, run make prepare or similar setup target
+if [ -f Makefile ]; then
+    grep -q "prepare:" Makefile && make prepare || true
+fi
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
index 3002f02..6f5ec2d 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-3739 1723
+3777 2383
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3542
+Content-Length: 3580
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
@@ -15,7 +15,7 @@
    "content": [
     {
      "type": "text",
-     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\n"
+     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\nRUN rm -f /app/tmp-sketch-dockerfile\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\n"
     },
     {
      "type": "text",
@@ -50,24 +50,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T16:51:37Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T19:55:42Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T16:51:39Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T19:55:46Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-05T16:51:36Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-05T19:55:40Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T16:51:37Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T19:55:42Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 93b1be5a5b55fad2-SJC
+Cf-Ray: 93b2cbf9bcab15f7-SJC
 Content-Type: application/json
-Date: Mon, 05 May 2025 16:51:39 GMT
-Request-Id: req_011CNpjFgpE7TnFW1Rwr5xLK
+Date: Mon, 05 May 2025 19:55:46 GMT
+Request-Id: req_011CNpyHmZv42gfUEp4BiYvZ
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_013wNXrDCnMcqRnrSQN6UgmH","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll create a Dockerfile for your Go project using the template you provided. Since you're asking me to minimize the extra commands and this appears to be a straightforward Go development environment, I'll keep the extra commands minimal."},{"type":"tool_use","id":"toolu_012NmU3xu7HJCz2Pomj1sTa9","name":"dockerfile","input":{"extra_cmds":"RUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1268,"cache_read_input_tokens":0,"output_tokens":125}}
\ No newline at end of file
+{"id":"msg_01P8BMBGo1uG2pRH27YTQKRw","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll help you create a Dockerfile for this Go project. Based on the template you provided, I need to generate appropriate extra commands for the Dockerfile that will set up a development environment.\n\nSince you mentioned this is primarily a Go project, I'll focus on creating a minimal set of extra commands that might be helpful for a Go development environment. I'll ensure Python commands have error handling, and apt-get install commands have the \"|| true\" suffix as requested."},{"type":"tool_use","id":"toolu_015rV7PbsVvcoTHGnkcYtC78","name":"dockerfile","input":{"extra_cmds":"# Install any Go tools that might be useful for development\ngo install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true\ngo install github.com/rakyll/gotest@latest || true\n\n# Install Python dependencies if needed (with error handling)\nif [ -f requirements.txt ]; then\n    pip3 install -r requirements.txt || true\nfi\n\n# If Makefile exists, run make prepare or similar setup target\nif [ -f Makefile ]; then\n    grep -q \"prepare:\" Makefile && make prepare || true\nfi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1282,"cache_read_input_tokens":0,"output_tokens":289}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile
index 1e0a134..2084803 100644
--- a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile
@@ -7,8 +7,9 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="0d20ac4f1aa15306cab8f2accccb1498af2c67137ca60d0b858981e4beeec3ff"
+LABEL sketch_context="32ece3b0a507af8cac1fec473edc43346e765c027651b7a02724dbf70e75c76c"
 COPY . /app
+RUN rm -f /app/tmp-sketch-dockerfile
 
 WORKDIR /app
 RUN if [ -f go.mod ]; then go mod download; fi
@@ -18,6 +19,9 @@
 
 RUN apt-get update && apt-get install -y --no-install-recommends graphviz || true
 
+# Python tooling setup - designed to continue even if there are failures
+RUN pip3 install --upgrade pip || true
+
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
 
diff --git a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
index 3ce26fe..53ec9b4 100644
--- a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-4001 1684
+4039 1897
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3804
+Content-Length: 3842
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
@@ -15,7 +15,7 @@
    "content": [
     {
      "type": "text",
-     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
+     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\nRUN rm -f /app/tmp-sketch-dockerfile\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
     },
     {
      "type": "text",
@@ -54,24 +54,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T16:51:34Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T19:55:37Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T16:51:36Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T19:55:40Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-05T16:51:33Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-05T19:55:36Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T16:51:34Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T19:55:37Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 93b1be45dc77fad2-SJC
+Cf-Ray: 93b2cbe1cf0f15f7-SJC
 Content-Type: application/json
-Date: Mon, 05 May 2025 16:51:36 GMT
-Request-Id: req_011CNpjFSmdfkpv1d5anwEYb
+Date: Mon, 05 May 2025 19:55:40 GMT
+Request-Id: req_011CNpyHVEQN87xrm73oPwzT
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01YXuT9qiSciNwfD92qXE8gA","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the provided context, I'll create a Dockerfile for your Go project. I notice from the readme.md that the project requires `dot` to run tests. This is likely referring to Graphviz's dot tool."},{"type":"tool_use","id":"toolu_014W3pRioKJUQ8YsQRvFCmBe","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends graphviz || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1317,"cache_read_input_tokens":0,"output_tokens":127}}
\ No newline at end of file
+{"id":"msg_01Mikz4aehYkkuUzVtUjHuV3","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Thank you for providing the details for creating a Dockerfile. Based on the information given, I'll call the dockerfile tool to generate the appropriate Dockerfile.\n\nFrom the readme.md file, I can see that the project requires the `dot` tool to run tests, which is part of the Graphviz package."},{"type":"tool_use","id":"toolu_013MzpkEN2DJ1Zd8YPtF2tPQ","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends graphviz || true\n\n# Python tooling setup - designed to continue even if there are failures\nRUN pip3 install --upgrade pip || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1331,"cache_read_input_tokens":0,"output_tokens":172}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
index 866f21a..9e6ada1 100644
--- a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
@@ -7,8 +7,9 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="26cda6870ba9562802f4a56d488b5f48d95d8ec7834ba62f043bbd50a2a18c1e"
+LABEL sketch_context="79b4c82f0c892e5f79900afb235c0ab50044626be5d6d43b774f6f5da9537800"
 COPY . /app
+RUN rm -f /app/tmp-sketch-dockerfile
 
 WORKDIR /app
 RUN if [ -f go.mod ]; then go mod download; fi
@@ -16,22 +17,16 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-# Install Python 3.11 and pip
+# Install Python 3.11 (if not already the default version) and set it up
 RUN apt-get update && \
-    apt-get install -y --no-install-recommends python3.11 python3.11-dev python3.11-venv python3-pip || true
-
-# Set up Python alternatives to make 3.11 the default
-RUN if command -v update-alternatives &> /dev/null; then \
-      update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1 || true; \
-    fi
-
-# Install DVC tool
-RUN pip3 install dvc || true
-
-# Clean up apt cache
-RUN apt-get clean && \
+    apt-get install -y --no-install-recommends python3.11 python3.11-venv python3-pip || true && \
+    update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1 || true && \
+    apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
+# Install DVC tool as mentioned in README
+RUN pip3 install dvc || true
+
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
 
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
index 2347e16..b1ef4e7 100644
--- a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-4024 2102
+4062 2058
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3827
+Content-Length: 3865
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
@@ -15,7 +15,7 @@
    "content": [
     {
      "type": "text",
-     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
+     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\nRUN rm -f /app/tmp-sketch-dockerfile\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
     },
     {
      "type": "text",
@@ -54,24 +54,24 @@
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
 Anthropic-Ratelimit-Input-Tokens-Remaining: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T16:51:40Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T19:55:47Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T16:51:44Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T19:55:50Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-05T16:51:39Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-05T19:55:47Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
 Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T16:51:40Z
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T19:55:47Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 93b1be6dc922fad2-SJC
+Cf-Ray: 93b2cc227ed515f7-SJC
 Content-Type: application/json
-Date: Mon, 05 May 2025 16:51:44 GMT
-Request-Id: req_011CNpjFvAuMn2EenFbBe3Xv
+Date: Mon, 05 May 2025 19:55:51 GMT
+Request-Id: req_011CNpyJFSiFJUtRqgiMPiG3
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_018VcKJDxUTKUgW4pLHyuhr4","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the README.md, I can see that this project requires Python 3.11 and the DVC tool. I'll create a Dockerfile with appropriate extra commands to set up these requirements."},{"type":"tool_use","id":"toolu_01ADRz6q1DEBGxCLwVVPQKzZ","name":"dockerfile","input":{"extra_cmds":"# Install Python 3.11 and pip\nRUN apt-get update && \\\n    apt-get install -y --no-install-recommends python3.11 python3.11-dev python3.11-venv python3-pip || true\n\n# Set up Python alternatives to make 3.11 the default\nRUN if command -v update-alternatives &> /dev/null; then \\\n      update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1 || true; \\\n    fi\n\n# Install DVC tool\nRUN pip3 install dvc || true\n\n# Clean up apt cache\nRUN apt-get clean && \\\n    rm -rf /var/lib/apt/lists/*"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1324,"cache_read_input_tokens":0,"output_tokens":273}}
\ No newline at end of file
+{"id":"msg_01G9uUSv5BciWemp442LWMUE","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the README.md, this project requires Python 3.11 and the DVC (Data Version Control) tool. Since the dockerfile template already includes Python3, I'll add commands to ensure Python 3.11 is installed and to set up DVC."},{"type":"tool_use","id":"toolu_01PWZdG27vVMNfzgzmLV7Hi8","name":"dockerfile","input":{"extra_cmds":"# Install Python 3.11 (if not already the default version) and set it up\nRUN apt-get update && \\\n    apt-get install -y --no-install-recommends python3.11 python3.11-venv python3-pip || true && \\\n    update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1 || true && \\\n    apt-get clean && \\\n    rm -rf /var/lib/apt/lists/*\n\n# Install DVC tool as mentioned in README\nRUN pip3 install dvc || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1338,"cache_read_input_tokens":0,"output_tokens":254}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
index cc9d92a..c9070fc 100644
--- a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
@@ -7,8 +7,9 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="fdd2888029d1917f54e9226a508a57104914e5a2351037188340a20d8019d305"
+LABEL sketch_context="c0828a2b9bfbd0484300d9e371121aaf027862652780c0b007a154ae6bbaf6bc"
 COPY . /app
+RUN rm -f /app/tmp-sketch-dockerfile
 
 WORKDIR /app
 RUN if [ -f go.mod ]; then go mod download; fi
@@ -16,16 +17,10 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-# Install Node.js 18
-RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
-    apt-get install -y nodejs || true
+RUN npm install -g corepack && corepack enable || true
 
-# Install corepack for package management (yarn/pnpm)
-RUN npm install -g corepack && \
-    corepack enable || true
-
-# If package.json exists, install dependencies
-RUN if [ -f package.json ]; then npm install || true; fi
+# If there are any Python dependencies, install them in a way that doesn't fail build
+RUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi
 
 # Switch back to strict shell after extra_cmds.
 SHELL ["/bin/bash", "-euxo", "pipefail", "-c"]
diff --git a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
index 84e98bb..522c801 100644
--- a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-4473 2166
+4511 1810
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 4276
+Content-Length: 4314
 Anthropic-Version: 2023-06-01
 Content-Type: application/json
 
@@ -15,7 +15,7 @@
    "content": [
     {
      "type": "text",
-     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
+     "text": "\nCall the dockerfile tool to create a Dockerfile.\nThe parameters to dockerfile fill out the From and ExtraCmds\ntemplate variables in the following Go template:\n\n```\nFROM golang:1.24-bookworm\n\n# Switch from dash to bash by default.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\n# attempt to keep package installs lean\nRUN printf '%s\\n' \\\n      'path-exclude=/usr/share/man/*' \\\n      'path-exclude=/usr/share/doc/*' \\\n      'path-exclude=/usr/share/doc-base/*' \\\n      'path-exclude=/usr/share/info/*' \\\n      'path-exclude=/usr/share/locale/*' \\\n      'path-exclude=/usr/share/groff/*' \\\n      'path-exclude=/usr/share/lintian/*' \\\n      'path-exclude=/usr/share/zoneinfo/*' \\\n    \u003e /etc/dpkg/dpkg.cfg.d/01_nodoc\n\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/*\n\n# Strip out docs from debian.\nRUN rm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\nENV PATH=\"$GOPATH/bin:$PATH\"\n\n# While these binaries install generally useful supporting packages,\n# the specific versions are rarely what a user wants so there is no\n# point polluting the base image module with them.\n\nRUN go install golang.org/x/tools/cmd/goimports@latest; \\\n\tgo install golang.org/x/tools/gopls@latest; \\\n\tgo install mvdan.cc/gofumpt@latest; \\\n\tgo clean -cache -testcache -modcache\n\nENV GOTOOLCHAIN=auto\nENV SKETCH=1\n\nRUN mkdir -p /root/.cache/sketch/webui\n\nARG GIT_USER_EMAIL\nARG GIT_USER_NAME\n\nRUN git config --global user.email \"$GIT_USER_EMAIL\" \u0026\u0026 \\\n    git config --global user.name \"$GIT_USER_NAME\" \u0026\u0026 \\\n    git config --global http.postBuffer 524288000\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\nRUN rm -f /app/tmp-sketch-dockerfile\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\n# Switch to lenient shell so we are more likely to get past failing extra_cmds.\nSHELL [\"/bin/bash\", \"-uo\", \"pipefail\", \"-c\"]\n\n{{.ExtraCmds}}\n\n# Switch back to strict shell after extra_cmds.\nSHELL [\"/bin/bash\", \"-euxo\", \"pipefail\", \"-c\"]\n\nCMD [\"/bin/sketch\"]\n\n```\n\nIn particular:\n- Assume it is primarily a Go project.\n- Python env setup is challenging and often no required, so any RUN commands involving python tooling should be written to let docker build continue if there is a failure.\n- Include any tools particular to this repository that can be inferred from the given context.\n- Append || true to any apt-get install commands in case the package does not exist.\n- MINIMIZE the number of extra_cmds generated. Straightforward environments do not need any.\n- Do NOT expose any ports.\n- Do NOT generate any CMD or ENTRYPOINT extra commands.\nHere is the content of several files from the repository that may be relevant:\n\n"
     },
     {
      "type": "text",
@@ -57,25 +57,25 @@
 }HTTP/2.0 200 OK
 Anthropic-Organization-Id: 3c473a21-7208-450a-a9f8-80aebda45c1b
 Anthropic-Ratelimit-Input-Tokens-Limit: 200000
-Anthropic-Ratelimit-Input-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T16:52:05Z
+Anthropic-Ratelimit-Input-Tokens-Remaining: 184000
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-05T19:55:38Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T16:51:33Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-05T19:55:36Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-05T16:51:28Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-05T19:55:32Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 160000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T16:51:33Z
+Anthropic-Ratelimit-Tokens-Remaining: 264000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-05T19:55:36Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 93b1be27db49fad2-SJC
+Cf-Ray: 93b2cbc8893815f7-SJC
 Content-Type: application/json
-Date: Mon, 05 May 2025 16:51:33 GMT
-Request-Id: req_011CNpjF6VEj1YrUhYLrvXLA
+Date: Mon, 05 May 2025 19:55:36 GMT
+Request-Id: req_011CNpyHBucL8yrPiyPWPRjU
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_011CTZb1TNDkLNebQVjiGPMT","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the repository information you've provided, I'll call the dockerfile tool to create a Dockerfile for your Go project.\n\nLooking at the files, I can see this is primarily a Go project that also uses Node.js with version 18. The GitHub workflow shows it uses corepack, which suggests this is a JavaScript/TypeScript project alongside Go.\n\nI'll create a Dockerfile with appropriate extra commands:"},{"type":"tool_use","id":"toolu_01GAQLqzpqp1zF22qDs2B6C9","name":"dockerfile","input":{"extra_cmds":"# Install Node.js 18\nRUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \\\n    apt-get install -y nodejs || true\n\n# Install corepack for package management (yarn/pnpm)\nRUN npm install -g corepack && \\\n    corepack enable || true\n\n# If package.json exists, install dependencies\nRUN if [ -f package.json ]; then npm install || true; fi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1441,"cache_read_input_tokens":0,"output_tokens":254}}
\ No newline at end of file
+{"id":"msg_01JW8MofecQCTuEEyrvZ2Moh","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll help you create a Dockerfile using the template you provided. Based on the repository files you've shared, I can see this is a Go project that also uses Node.js with corepack."},{"type":"tool_use","id":"toolu_01SbVxNX7BhtLRT6ByGxa63K","name":"dockerfile","input":{"extra_cmds":"RUN npm install -g corepack && corepack enable || true\n\n# If there are any Python dependencies, install them in a way that doesn't fail build\nRUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1455,"cache_read_input_tokens":0,"output_tokens":158}}
\ No newline at end of file