diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
index 0c30575..79e71ad 100644
--- a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/boldsoftware/sketch:33392fad8fef8761c0ef3ec098713f00
+FROM ghcr.io/boldsoftware/sketch:538be6f879a81c5caca6bc08e5c2097c
 
 ARG GIT_USER_EMAIL
 ARG GIT_USER_NAME
@@ -7,7 +7,7 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="32f3dfaaf9794fb866df21522ace42c3d6c9f5664a7edd77e0a90daf57c315ba"
+LABEL sketch_context="66be619506f6b5a4566f9b37b6ca957807cb85f4779deb44b56d7b62b3d1eae7"
 COPY . /app
 RUN rm -f /app/tmp-sketch-dockerfile
 
diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
index 84f397b..440a6f1 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
-4076 1669
+4766 1720
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3879
+Content-Length: 4569
 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 chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -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\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"
+     "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 ubuntu:24.04\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\n# Install system packages including ca-certificates for Go downloads\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tca-certificates wget \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\n# Install Go 1.24\nENV GO_VERSION=1.24.3\nENV GOROOT=/usr/local/go\nENV GOPATH=/go\nENV PATH=$GOROOT/bin:$GOPATH/bin:$PATH\n\nRUN ARCH=$(uname -m) \u0026\u0026 \\\n\tcase $ARCH in \\\n\t\tx86_64) GOARCH=amd64 ;; \\\n\t\taarch64) GOARCH=arm64 ;; \\\n\t\t*) echo \"Unsupported architecture: $ARCH\" \u0026\u0026 exit 1 ;; \\\n\tesac \u0026\u0026 \\\n\twget -O go.tar.gz \"https://golang.org/dl/go${GO_VERSION}.linux-${GOARCH}.tar.gz\" \u0026\u0026 \\\n\ttar -C /usr/local -xzf go.tar.gz \u0026\u0026 \\\n\trm go.tar.gz\n\n# Create GOPATH directory\nRUN mkdir -p \"$GOPATH/src\" \"$GOPATH/bin\" \u0026\u0026 chmod -R 755 \"$GOPATH\"\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\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: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:21Z
+Anthropic-Ratelimit-Input-Tokens-Remaining: 135000
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-28T17:53:36Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:23Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 79000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-28T17:53:20Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:20Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-28T17:53:16Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:21Z
+Anthropic-Ratelimit-Tokens-Remaining: 214000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-28T17:53:20Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 944f2f1ffec8cf2e-SJC
+Cf-Ray: 946f9c4afdd5155d-SJC
 Content-Type: application/json
-Date: Sat, 24 May 2025 19:26:23 GMT
-Request-Id: req_011CPSuRQeiLDnd8ho1ZABi6
+Date: Wed, 28 May 2025 17:53:19 GMT
+Request-Id: req_011CPaMZSTtP1TnStN1QJApQ
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01TJGzpq3ksGASSiBNydHY6T","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Looking at the repository content, this appears to be a simple Go test project. The Dockerfile template already includes comprehensive Go development tools and dependencies, so no additional commands are needed for this straightforward setup."},{"type":"tool_use","id":"toolu_01UBV1k5w8RceegtCA6Xh1tS","name":"dockerfile","input":{"extra_cmds":""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1339,"cache_read_input_tokens":0,"output_tokens":94,"service_tier":"standard"}}
\ No newline at end of file
+{"id":"msg_019UxfwoKBDNPSKWjpHmubeL","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository context, this appears to be a simple Go test project. Since it's described as \"A Go project for testing\" and there are no special dependencies or complex setup requirements evident from the provided files, I'll create a minimal Dockerfile without any extra commands."},{"type":"tool_use","id":"toolu_01NCgd8YEq6fto15nQEdmFge","name":"dockerfile","input":{"extra_cmds":""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1586,"cache_read_input_tokens":0,"output_tokens":109,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
index 0539790..5ae600a 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/boldsoftware/sketch:33392fad8fef8761c0ef3ec098713f00
+FROM ghcr.io/boldsoftware/sketch:538be6f879a81c5caca6bc08e5c2097c
 
 ARG GIT_USER_EMAIL
 ARG GIT_USER_NAME
@@ -7,7 +7,7 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="301178240b689140442bd8e7fea6864f93b6a2eb467cb0510c99369c68156657"
+LABEL sketch_context="af8725fa8dcb4a7f3f5a08244c8050b45ad556442f3f2cfd25130b39c0f592bd"
 COPY . /app
 RUN rm -f /app/tmp-sketch-dockerfile
 
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
index 6393ae9..cd9e4c2 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-3829 1654
+4519 1749
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3632
+Content-Length: 4322
 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 chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -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\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"
+     "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 ubuntu:24.04\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\n# Install system packages including ca-certificates for Go downloads\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tca-certificates wget \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\n# Install Go 1.24\nENV GO_VERSION=1.24.3\nENV GOROOT=/usr/local/go\nENV GOPATH=/go\nENV PATH=$GOROOT/bin:$GOPATH/bin:$PATH\n\nRUN ARCH=$(uname -m) \u0026\u0026 \\\n\tcase $ARCH in \\\n\t\tx86_64) GOARCH=amd64 ;; \\\n\t\taarch64) GOARCH=arm64 ;; \\\n\t\t*) echo \"Unsupported architecture: $ARCH\" \u0026\u0026 exit 1 ;; \\\n\tesac \u0026\u0026 \\\n\twget -O go.tar.gz \"https://golang.org/dl/go${GO_VERSION}.linux-${GOARCH}.tar.gz\" \u0026\u0026 \\\n\ttar -C /usr/local -xzf go.tar.gz \u0026\u0026 \\\n\trm go.tar.gz\n\n# Create GOPATH directory\nRUN mkdir -p \"$GOPATH/src\" \"$GOPATH/bin\" \u0026\u0026 chmod -R 755 \"$GOPATH\"\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\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: 2025-05-24T19:26:34Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-28T17:53:32Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:35Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 78000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-28T17:53:35Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:32Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-28T17:53:30Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:34Z
+Anthropic-Ratelimit-Tokens-Remaining: 278000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-28T17:53:32Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 944f2f6bfce6cf2e-SJC
+Cf-Ray: 946f9ca2ab1d155d-SJC
 Content-Type: application/json
-Date: Sat, 24 May 2025 19:26:35 GMT
-Request-Id: req_011CPSuSK4eHncWRpcdktYD5
+Date: Wed, 28 May 2025 17:53:34 GMT
+Request-Id: req_011CPaMaUSyAoFGXyrPfqLTr
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01FLx3RCrgBwRUJPmaVHcqJh","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"I'll call the dockerfile tool to create a Dockerfile for this Go project. Since this appears to be a straightforward Go project and the base template already includes comprehensive tooling, I'll keep the extra commands minimal."},{"type":"tool_use","id":"toolu_016D9ZU3qDRwiYQkx2zCd6Dz","name":"dockerfile","input":{"extra_cmds":""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1295,"cache_read_input_tokens":0,"output_tokens":97,"service_tier":"standard"}}
\ No newline at end of file
+{"id":"msg_01XAoC47dTB2ySdrAvGBWDzH","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the context provided, this appears to be a Go project with a comprehensive development environment already set up in the base template. Since the template already includes Go tooling, common development packages, and proper Go module handling, I'll create a minimal Dockerfile without unnecessary extra commands."},{"type":"tool_use","id":"toolu_012K41Z5bdPRNBi7G2vpUEgW","name":"dockerfile","input":{"extra_cmds":""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1542,"cache_read_input_tokens":0,"output_tokens":110,"service_tier":"standard"}}
\ 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 335a19b..e500280 100644
--- a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/boldsoftware/sketch:33392fad8fef8761c0ef3ec098713f00
+FROM ghcr.io/boldsoftware/sketch:538be6f879a81c5caca6bc08e5c2097c
 
 ARG GIT_USER_EMAIL
 ARG GIT_USER_NAME
@@ -7,7 +7,7 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="7e1f552b9580950cbed404c55363e639b1a653106d13b5d0a8d1977312f9aa73"
+LABEL sketch_context="932c55d6d3a743f11a903d8aaba8b38b5f267e03c5198568dba5c24bac194672"
 COPY . /app
 RUN rm -f /app/tmp-sketch-dockerfile
 
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 1662f39..2a142be 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
-4091 1712
+4781 1712
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3894
+Content-Length: 4584
 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 chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -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\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"
+     "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 ubuntu:24.04\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\n# Install system packages including ca-certificates for Go downloads\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tca-certificates wget \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\n# Install Go 1.24\nENV GO_VERSION=1.24.3\nENV GOROOT=/usr/local/go\nENV GOPATH=/go\nENV PATH=$GOROOT/bin:$GOPATH/bin:$PATH\n\nRUN ARCH=$(uname -m) \u0026\u0026 \\\n\tcase $ARCH in \\\n\t\tx86_64) GOARCH=amd64 ;; \\\n\t\taarch64) GOARCH=arm64 ;; \\\n\t\t*) echo \"Unsupported architecture: $ARCH\" \u0026\u0026 exit 1 ;; \\\n\tesac \u0026\u0026 \\\n\twget -O go.tar.gz \"https://golang.org/dl/go${GO_VERSION}.linux-${GOARCH}.tar.gz\" \u0026\u0026 \\\n\ttar -C /usr/local -xzf go.tar.gz \u0026\u0026 \\\n\trm go.tar.gz\n\n# Create GOPATH directory\nRUN mkdir -p \"$GOPATH/src\" \"$GOPATH/bin\" \u0026\u0026 chmod -R 755 \"$GOPATH\"\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\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: 2025-05-24T19:26:30Z
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-28T17:53:27Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:32Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 77000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-28T17:53:31Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:28Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-28T17:53:25Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:30Z
+Anthropic-Ratelimit-Tokens-Remaining: 277000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-28T17:53:27Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 944f2f52bfc6cf2e-SJC
+Cf-Ray: 946f9c836adb155d-SJC
 Content-Type: application/json
-Date: Sat, 24 May 2025 19:26:32 GMT
-Request-Id: req_011CPSuS1M2svDB9uvvBCdj1
+Date: Wed, 28 May 2025 17:53:29 GMT
+Request-Id: req_011CPaMa7zudiAX5prYCpBnn
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_0141cdBZsjRWogeq5ekbTE2s","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository context, I can see this is a Go project that requires the `dot` tool (from Graphviz) to run tests. I'll create a Dockerfile with minimal extra commands to install this dependency."},{"type":"tool_use","id":"toolu_018r92XQ2Che5GXTNKH23t9t","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":1344,"cache_read_input_tokens":0,"output_tokens":126,"service_tier":"standard"}}
\ No newline at end of file
+{"id":"msg_01AaYCbnP92de7GGYxDr8YGT","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository content, I can see this is a Go project that requires the `dot` tool (from Graphviz) to run tests. I'll create a Dockerfile with minimal extra commands to install this dependency."},{"type":"tool_use","id":"toolu_018ruUbC9y7mWuhPRfqY3733","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":1591,"cache_read_input_tokens":0,"output_tokens":126,"service_tier":"standard"}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
index 37bce4a..fb0e525 100644
--- a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/boldsoftware/sketch:33392fad8fef8761c0ef3ec098713f00
+FROM ghcr.io/boldsoftware/sketch:538be6f879a81c5caca6bc08e5c2097c
 
 ARG GIT_USER_EMAIL
 ARG GIT_USER_NAME
@@ -7,7 +7,7 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="d1a2565ff3402ed91077dff3b4fee531722ad1651156d8178a3920acd41a4f92"
+LABEL sketch_context="d27408dab7235a7280709f1023a865867040b21a41ebfbe40272ad4447895482"
 COPY . /app
 RUN rm -f /app/tmp-sketch-dockerfile
 
@@ -17,7 +17,9 @@
 # Switch to lenient shell so we are more likely to get past failing extra_cmds.
 SHELL ["/bin/bash", "-uo", "pipefail", "-c"]
 
-RUN apt-get update && apt-get install -y --no-install-recommends python3.11 python3.11-venv python3.11-dev python3-pip || true
+RUN apt-get update && apt-get install -y --no-install-recommends software-properties-common || true
+RUN add-apt-repository ppa:deadsnakes/ppa || true
+RUN apt-get update && apt-get install -y --no-install-recommends python3.11 python3.11-pip python3.11-venv || true
 RUN python3.11 -m pip install --upgrade pip || true
 RUN python3.11 -m pip install dvc || true
 
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
index 8817d9d..6b4a271 100644
--- a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-4114 1849
+4804 1989
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 3917
+Content-Length: 4607
 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 chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -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\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"
+     "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 ubuntu:24.04\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\n# Install system packages including ca-certificates for Go downloads\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tca-certificates wget \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\n# Install Go 1.24\nENV GO_VERSION=1.24.3\nENV GOROOT=/usr/local/go\nENV GOPATH=/go\nENV PATH=$GOROOT/bin:$GOPATH/bin:$PATH\n\nRUN ARCH=$(uname -m) \u0026\u0026 \\\n\tcase $ARCH in \\\n\t\tx86_64) GOARCH=amd64 ;; \\\n\t\taarch64) GOARCH=arm64 ;; \\\n\t\t*) echo \"Unsupported architecture: $ARCH\" \u0026\u0026 exit 1 ;; \\\n\tesac \u0026\u0026 \\\n\twget -O go.tar.gz \"https://golang.org/dl/go${GO_VERSION}.linux-${GOARCH}.tar.gz\" \u0026\u0026 \\\n\ttar -C /usr/local -xzf go.tar.gz \u0026\u0026 \\\n\trm go.tar.gz\n\n# Create GOPATH directory\nRUN mkdir -p \"$GOPATH/src\" \"$GOPATH/bin\" \u0026\u0026 chmod -R 755 \"$GOPATH\"\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\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: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:37Z
+Anthropic-Ratelimit-Input-Tokens-Remaining: 144000
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-28T17:53:53Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
-Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:39Z
+Anthropic-Ratelimit-Output-Tokens-Remaining: 75000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-28T17:53:43Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:35Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-28T17:53:35Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:37Z
+Anthropic-Ratelimit-Tokens-Remaining: 219000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-28T17:53:43Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 944f2f825eb7cf2e-SJC
+Cf-Ray: 946f9cc0f9ce155d-SJC
 Content-Type: application/json
-Date: Sat, 24 May 2025 19:26:39 GMT
-Request-Id: req_011CPSuSZvr61mxd6kuxhH4D
+Date: Wed, 28 May 2025 17:53:40 GMT
+Request-Id: req_011CPaMaqAuex9rgEk11Wzaj
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01M5T43NcRNzThpLjouPwhyb","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository content, I can see this is a Go project that also requires Python 3.11 and the dvc tool. I'll create a Dockerfile with the necessary extra commands to set up this environment."},{"type":"tool_use","id":"toolu_011poaC5Ci5MDx4gECtv9E4K","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends python3.11 python3.11-venv python3.11-dev python3-pip || true\nRUN python3.11 -m pip install --upgrade pip || true\nRUN python3.11 -m pip install dvc || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1351,"cache_read_input_tokens":0,"output_tokens":177,"service_tier":"standard"}}
\ No newline at end of file
+{"id":"msg_01GTg6Do9GRWTxECSaTQFD1v","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository content, I can see this is a Go project that also requires Python 3.11 and the DVC tool. I'll create a Dockerfile with the necessary extra commands to set up this environment."},{"type":"tool_use","id":"toolu_01Bbr3Pdz8N8KisNrwx2NMiM","name":"dockerfile","input":{"extra_cmds":"RUN apt-get update && apt-get install -y --no-install-recommends software-properties-common || true\nRUN add-apt-repository ppa:deadsnakes/ppa || true\nRUN apt-get update && apt-get install -y --no-install-recommends python3.11 python3.11-pip python3.11-venv || true\nRUN python3.11 -m pip install --upgrade pip || true\nRUN python3.11 -m pip install dvc || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1598,"cache_read_input_tokens":0,"output_tokens":220,"service_tier":"standard"}}
\ 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 65c657e..3c4d545 100644
--- a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/boldsoftware/sketch:33392fad8fef8761c0ef3ec098713f00
+FROM ghcr.io/boldsoftware/sketch:538be6f879a81c5caca6bc08e5c2097c
 
 ARG GIT_USER_EMAIL
 ARG GIT_USER_NAME
@@ -7,7 +7,7 @@
     git config --global user.name "$GIT_USER_NAME" && \
     git config --global http.postBuffer 524288000
 
-LABEL sketch_context="6948c74e0afd54b059989ef9f0b8ff601e1da48864a4a4b0c19c6b6e6a6b1cca"
+LABEL sketch_context="ffcf6d1a9dbc4bddce7509c7ad4bd279613a5ae1b4d22fb772596968a4b3a442"
 COPY . /app
 RUN rm -f /app/tmp-sketch-dockerfile
 
diff --git a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
index e34bf21..6b5f219 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
-4563 1846
+5253 1833
 POST https://api.anthropic.com/v1/messages HTTP/1.1
 Host: api.anthropic.com
 User-Agent: Go-http-client/1.1
-Content-Length: 4366
+Content-Length: 5056
 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 chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -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\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"
+     "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 ubuntu:24.04\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\n# Install system packages including ca-certificates for Go downloads\nRUN apt-get update; \\\n\tapt-get install -y --no-install-recommends \\\n\t\tca-certificates wget \\\n\t\tgit jq sqlite3 npm nodejs gh ripgrep fzf python3 curl vim chromium lsof iproute2 less \u0026\u0026 \\\n\tapt-get clean \u0026\u0026 \\\n\trm -rf /var/lib/apt/lists/* \u0026\u0026 \\\n\trm -rf /usr/share/{doc,doc-base,info,lintian,man,groff,locale,zoneinfo}/*\n\n# Install Go 1.24\nENV GO_VERSION=1.24.3\nENV GOROOT=/usr/local/go\nENV GOPATH=/go\nENV PATH=$GOROOT/bin:$GOPATH/bin:$PATH\n\nRUN ARCH=$(uname -m) \u0026\u0026 \\\n\tcase $ARCH in \\\n\t\tx86_64) GOARCH=amd64 ;; \\\n\t\taarch64) GOARCH=arm64 ;; \\\n\t\t*) echo \"Unsupported architecture: $ARCH\" \u0026\u0026 exit 1 ;; \\\n\tesac \u0026\u0026 \\\n\twget -O go.tar.gz \"https://golang.org/dl/go${GO_VERSION}.linux-${GOARCH}.tar.gz\" \u0026\u0026 \\\n\ttar -C /usr/local -xzf go.tar.gz \u0026\u0026 \\\n\trm go.tar.gz\n\n# Create GOPATH directory\nRUN mkdir -p \"$GOPATH/src\" \"$GOPATH/bin\" \u0026\u0026 chmod -R 755 \"$GOPATH\"\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\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: 200000
-Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-24T19:26:25Z
+Anthropic-Ratelimit-Input-Tokens-Remaining: 184000
+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-28T17:53:26Z
 Anthropic-Ratelimit-Output-Tokens-Limit: 80000
 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-24T19:26:28Z
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-28T17:53:24Z
 Anthropic-Ratelimit-Requests-Limit: 4000
 Anthropic-Ratelimit-Requests-Remaining: 3999
-Anthropic-Ratelimit-Requests-Reset: 2025-05-24T19:26:23Z
+Anthropic-Ratelimit-Requests-Reset: 2025-05-28T17:53:20Z
 Anthropic-Ratelimit-Tokens-Limit: 280000
-Anthropic-Ratelimit-Tokens-Remaining: 280000
-Anthropic-Ratelimit-Tokens-Reset: 2025-05-24T19:26:25Z
+Anthropic-Ratelimit-Tokens-Remaining: 264000
+Anthropic-Ratelimit-Tokens-Reset: 2025-05-28T17:53:24Z
 Cf-Cache-Status: DYNAMIC
-Cf-Ray: 944f2f33ebdccf2e-SJC
+Cf-Ray: 946f9c648a89155d-SJC
 Content-Type: application/json
-Date: Sat, 24 May 2025 19:26:28 GMT
-Request-Id: req_011CPSuReH1pDY9VQMZwn6Qt
+Date: Wed, 28 May 2025 17:53:24 GMT
+Request-Id: req_011CPaMZjy6RPuBJbvLxXrpJ
 Server: cloudflare
 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
 Via: 1.1 google
 X-Robots-Tag: none
 
-{"id":"msg_01E9gngXiQYhF4VHLegSAfSS","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Looking at this repository, I can see it's a Go project with some Node.js dependencies based on the GitHub workflow. The workflow shows that it uses Node.js 18 and corepack for package management.\n\nSince the base Dockerfile template already includes comprehensive Go tooling and Node.js/npm, I'll add the corepack setup that's shown in the CI workflow."},{"type":"tool_use","id":"toolu_01LWnxt2d72pCD1Z4nrg3yxX","name":"dockerfile","input":{"extra_cmds":"RUN npm install -g corepack || true\nRUN corepack enable || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1468,"cache_read_input_tokens":0,"output_tokens":155,"service_tier":"standard"}}
\ No newline at end of file
+{"id":"msg_018dp6VQ1pEGWgY7WwNKcJJu","type":"message","role":"assistant","model":"claude-sonnet-4-20250514","content":[{"type":"text","text":"Based on the repository context, this appears to be a straightforward Go project with some Node.js dependencies (corepack is mentioned in the GitHub workflow). Since the base Dockerfile template already includes Go setup and basic tools, and the workflow shows this is a simple Go project that uses corepack, I'll add minimal extra commands."},{"type":"tool_use","id":"toolu_018VPbjQrV92MoLjAKALtMoV","name":"dockerfile","input":{"extra_cmds":"RUN npm install -g corepack || true\nRUN corepack enable || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1715,"cache_read_input_tokens":0,"output_tokens":143,"service_tier":"standard"}}
\ No newline at end of file