diff --git a/dockerimg/testdata/dockerfile_convo.httprr b/dockerimg/testdata/dockerfile_convo.httprr
new file mode 100644
index 0000000..0470323
--- /dev/null
+++ b/dockerimg/testdata/dockerfile_convo.httprr
@@ -0,0 +1,30 @@
+HTTP/1.1 200 OK
+Date: Wed, 05 Mar 2025 10:00:00 GMT
+Content-Type: application/json
+Content-Length: 987
+
+{
+  "id": "msg_0123456789abcdef",
+  "type": "message",
+  "role": "assistant",
+  "model": "claude-3-opus-20240229",
+  "stop_reason": "tool_use",
+  "stop_sequence": null,
+  "usage": {
+    "input_tokens": 256,
+    "output_tokens": 180
+  },
+  "content": [
+    {
+      "type": "text",
+      "text": "I'll create a Dockerfile for this Go project."
+    }
+  ],
+  "tool_use": {
+    "id": "tu_0123456789abcdef",
+    "name": "dockerfile",
+    "input": {
+      "contents": "FROM golang:1.21-alpine\n\nWORKDIR /app\n\n# Install git for dependencies\nRUN apk add --no-cache git\n\n# Pre-copy/cache go.mod for efficient Docker caching\nCOPY go.mod go.sum* ./\nRUN go mod download\n\n# Copy the source code\nCOPY . .\n\n# Build the application\nRUN go build -o app ./cmd/sketch\n\n# Environment setup\nENV CGO_ENABLED=0\n\nCMD [\"./app\"]"
+    }
+  }
+}
diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
new file mode 100644
index 0000000..128c852
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.dockerfile
@@ -0,0 +1,27 @@
+FROM golang:1.24.2-alpine3.21
+
+RUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf
+
+ENV GOTOOLCHAIN=auto
+ENV GOPATH=/go
+ENV PATH="$GOPATH/bin:$PATH"
+
+RUN go install golang.org/x/tools/cmd/goimports@latest
+RUN go install golang.org/x/tools/gopls@latest
+RUN go install mvdan.cc/gofumpt@latest
+
+RUN apk add --no-cache curl || true
+
+ARG GIT_USER_EMAIL
+ARG GIT_USER_NAME
+
+RUN git config --global user.email "$GIT_USER_EMAIL" && \
+    git config --global user.name "$GIT_USER_NAME"
+
+LABEL sketch_context="72646c3fcb61b4bb1017a3b5b76d5b2126e9f563ce7da5d58a379539595f0344"
+COPY . /app
+
+WORKDIR /app
+RUN if [ -f go.mod ]; then go mod download; fi
+
+CMD ["/bin/sketch"]
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
new file mode 100644
index 0000000..1c3ee06
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_basic_repo_with_readme.httprr
@@ -0,0 +1,81 @@
+httprr trace v1
+3037 1681
+POST https://api.anthropic.com/v1/messages HTTP/1.1
+Host: api.anthropic.com
+User-Agent: Go-http-client/1.1
+Content-Length: 2840
+Anthropic-Version: 2023-06-01
+Content-Type: application/json
+
+{
+ "model": "claude-3-7-sonnet-20250219",
+ "messages": [
+  {
+   "role": "user",
+   "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 {{.From}}\n\nRUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf\n\nENV GOTOOLCHAIN=auto\nENV GOPATH=/go\nENV PATH=\"$GOPATH/bin:$PATH\"\n\nRUN go install golang.org/x/tools/cmd/goimports@latest\nRUN go install golang.org/x/tools/gopls@latest\nRUN go install mvdan.cc/gofumpt@latest\n\n{{.ExtraCmds}}\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\"\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\nCMD [\"/bin/sketch\"]\n```\n\nIn particular:\n- Assume it is primarily a Go project. For a minimal env, prefer 1.24.2-alpine3.21 as a base image.\n- If any python is needed at all, switch to using a python alpine image as a the base and apk add go.\n  Favor using uv, and use one of these base images, depending on the preferred python version:\n    ghcr.io/astral-sh/uv:python3.13-alpine\n    ghcr.io/astral-sh/uv:python3.12-alpine\n    ghcr.io/astral-sh/uv:python3.11-alpine\n- When using pip to install packages, use: uv pip install --system.\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 apk add commands in case the package does not exist.\n- Do not expose any ports.\nHere is the content of several files from the repository that may be relevant:\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Here is the contents README.md:\n\u003cfile\u003e\n# Test Project\nA Go project for testing.\n\u003c/file\u003e\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Now call the dockerfile tool.",
+     "cache_control": {
+      "type": "ephemeral"
+     }
+    }
+   ]
+  }
+ ],
+ "max_tokens": 8192,
+ "tools": [
+  {
+   "name": "dockerfile",
+   "description": "Helps define a Dockerfile that sets up a dev environment for this project.",
+   "input_schema": {
+    "type": "object",
+    "required": [
+     "from",
+     "extra_cmds"
+    ],
+    "properties": {
+     "from": {
+      "type": "string",
+      "description": "The alpine base image provided to the dockerfile FROM command"
+     },
+     "extra_cmds": {
+      "type": "string",
+      "description": "Extra commands to add to the dockerfile."
+     }
+    }
+   }
+  }
+ ]
+}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: 2025-04-05T00:17:28Z
+Anthropic-Ratelimit-Output-Tokens-Limit: 80000
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-04-05T00:17:30Z
+Anthropic-Ratelimit-Requests-Limit: 4000
+Anthropic-Ratelimit-Requests-Remaining: 3999
+Anthropic-Ratelimit-Requests-Reset: 2025-04-05T00:17:28Z
+Anthropic-Ratelimit-Tokens-Limit: 280000
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-04-05T00:17:28Z
+Cf-Cache-Status: DYNAMIC
+Cf-Ray: 92b4dcd6de42943a-SJC
+Content-Type: application/json
+Date: Sat, 05 Apr 2025 00:17:30 GMT
+Request-Id: req_01ABvmpoBii9QTziayoGGv2a
+Server: cloudflare
+Via: 1.1 google
+X-Robots-Tag: none
+
+{"id":"msg_01TCvHPyXog5ysYCPaETR9JD","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.\n\nBased on the information provided, this appears to be a straightforward Go project without any Python requirements. The README confirms it's \"A Go project for testing.\" Therefore, I'll use the Go alpine image as the base."},{"type":"tool_use","id":"toolu_01MYYXLM3H8esGKeDGsjcrSY","name":"dockerfile","input":{"from":"golang:1.24.2-alpine3.21","extra_cmds":"RUN apk add --no-cache curl || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1014,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":153}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
new file mode 100644
index 0000000..a346cd3
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.dockerfile
@@ -0,0 +1,27 @@
+FROM golang:1.24.2-alpine3.21
+
+RUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf
+
+ENV GOTOOLCHAIN=auto
+ENV GOPATH=/go
+ENV PATH="$GOPATH/bin:$PATH"
+
+RUN go install golang.org/x/tools/cmd/goimports@latest
+RUN go install golang.org/x/tools/gopls@latest
+RUN go install mvdan.cc/gofumpt@latest
+
+RUN echo "Go development environment ready"
+
+ARG GIT_USER_EMAIL
+ARG GIT_USER_NAME
+
+RUN git config --global user.email "$GIT_USER_EMAIL" && \
+    git config --global user.name "$GIT_USER_NAME"
+
+LABEL sketch_context="e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+COPY . /app
+
+WORKDIR /app
+RUN if [ -f go.mod ]; then go mod download; fi
+
+CMD ["/bin/sketch"]
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
new file mode 100644
index 0000000..abc3dbf
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
@@ -0,0 +1,77 @@
+httprr trace v1
+2790 1642
+POST https://api.anthropic.com/v1/messages HTTP/1.1
+Host: api.anthropic.com
+User-Agent: Go-http-client/1.1
+Content-Length: 2593
+Anthropic-Version: 2023-06-01
+Content-Type: application/json
+
+{
+ "model": "claude-3-7-sonnet-20250219",
+ "messages": [
+  {
+   "role": "user",
+   "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 {{.From}}\n\nRUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf\n\nENV GOTOOLCHAIN=auto\nENV GOPATH=/go\nENV PATH=\"$GOPATH/bin:$PATH\"\n\nRUN go install golang.org/x/tools/cmd/goimports@latest\nRUN go install golang.org/x/tools/gopls@latest\nRUN go install mvdan.cc/gofumpt@latest\n\n{{.ExtraCmds}}\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\"\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\nCMD [\"/bin/sketch\"]\n```\n\nIn particular:\n- Assume it is primarily a Go project. For a minimal env, prefer 1.24.2-alpine3.21 as a base image.\n- If any python is needed at all, switch to using a python alpine image as a the base and apk add go.\n  Favor using uv, and use one of these base images, depending on the preferred python version:\n    ghcr.io/astral-sh/uv:python3.13-alpine\n    ghcr.io/astral-sh/uv:python3.12-alpine\n    ghcr.io/astral-sh/uv:python3.11-alpine\n- When using pip to install packages, use: uv pip install --system.\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 apk add commands in case the package does not exist.\n- Do not expose any ports.\n"
+    },
+    {
+     "type": "text",
+     "text": "Now call the dockerfile tool.",
+     "cache_control": {
+      "type": "ephemeral"
+     }
+    }
+   ]
+  }
+ ],
+ "max_tokens": 8192,
+ "tools": [
+  {
+   "name": "dockerfile",
+   "description": "Helps define a Dockerfile that sets up a dev environment for this project.",
+   "input_schema": {
+    "type": "object",
+    "required": [
+     "from",
+     "extra_cmds"
+    ],
+    "properties": {
+     "from": {
+      "type": "string",
+      "description": "The alpine base image provided to the dockerfile FROM command"
+     },
+     "extra_cmds": {
+      "type": "string",
+      "description": "Extra commands to add to the dockerfile."
+     }
+    }
+   }
+  }
+ ]
+}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: 2025-04-05T00:17:37Z
+Anthropic-Ratelimit-Output-Tokens-Limit: 80000
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-04-05T00:17:39Z
+Anthropic-Ratelimit-Requests-Limit: 4000
+Anthropic-Ratelimit-Requests-Remaining: 3999
+Anthropic-Ratelimit-Requests-Reset: 2025-04-05T00:17:36Z
+Anthropic-Ratelimit-Tokens-Limit: 280000
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-04-05T00:17:37Z
+Cf-Cache-Status: DYNAMIC
+Cf-Ray: 92b4dd0b09c6943a-SJC
+Content-Type: application/json
+Date: Sat, 05 Apr 2025 00:17:39 GMT
+Request-Id: req_01CT8x3PBEoaYUopedMVuEqp
+Server: cloudflare
+Via: 1.1 google
+X-Robots-Tag: none
+
+{"id":"msg_01SFTkFTza8Sagk4GWC5g1SJ","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll help you create a Dockerfile using the dockerfile tool. Based on your requirements, I'll use the Go 1.24.2-alpine3.21 base image since you indicated it's primarily a Go project and no specific Python requirements were mentioned."},{"type":"tool_use","id":"toolu_01EN6SxM4w1B9onGtpLGnwNF","name":"dockerfile","input":{"from":"golang:1.24.2-alpine3.21","extra_cmds":"RUN echo \"Go development environment ready\""}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":970,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":145}}
\ 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
new file mode 100644
index 0000000..c1a8bd6
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.dockerfile
@@ -0,0 +1,27 @@
+FROM golang:1.24.2-alpine3.21
+
+RUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf
+
+ENV GOTOOLCHAIN=auto
+ENV GOPATH=/go
+ENV PATH="$GOPATH/bin:$PATH"
+
+RUN go install golang.org/x/tools/cmd/goimports@latest
+RUN go install golang.org/x/tools/gopls@latest
+RUN go install mvdan.cc/gofumpt@latest
+
+RUN apk add graphviz || true
+
+ARG GIT_USER_EMAIL
+ARG GIT_USER_NAME
+
+RUN git config --global user.email "$GIT_USER_EMAIL" && \
+    git config --global user.name "$GIT_USER_NAME"
+
+LABEL sketch_context="077dd6d8e701af79c72b77ea9f851278a82eb35ea0c63e1999a2ef78272ce284"
+COPY . /app
+
+WORKDIR /app
+RUN if [ -f go.mod ]; then go mod download; fi
+
+CMD ["/bin/sketch"]
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
new file mode 100644
index 0000000..f4542e9
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_mention_a_devtool_in_the_readme.httprr
@@ -0,0 +1,81 @@
+httprr trace v1
+3052 1634
+POST https://api.anthropic.com/v1/messages HTTP/1.1
+Host: api.anthropic.com
+User-Agent: Go-http-client/1.1
+Content-Length: 2855
+Anthropic-Version: 2023-06-01
+Content-Type: application/json
+
+{
+ "model": "claude-3-7-sonnet-20250219",
+ "messages": [
+  {
+   "role": "user",
+   "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 {{.From}}\n\nRUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf\n\nENV GOTOOLCHAIN=auto\nENV GOPATH=/go\nENV PATH=\"$GOPATH/bin:$PATH\"\n\nRUN go install golang.org/x/tools/cmd/goimports@latest\nRUN go install golang.org/x/tools/gopls@latest\nRUN go install mvdan.cc/gofumpt@latest\n\n{{.ExtraCmds}}\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\"\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\nCMD [\"/bin/sketch\"]\n```\n\nIn particular:\n- Assume it is primarily a Go project. For a minimal env, prefer 1.24.2-alpine3.21 as a base image.\n- If any python is needed at all, switch to using a python alpine image as a the base and apk add go.\n  Favor using uv, and use one of these base images, depending on the preferred python version:\n    ghcr.io/astral-sh/uv:python3.13-alpine\n    ghcr.io/astral-sh/uv:python3.12-alpine\n    ghcr.io/astral-sh/uv:python3.11-alpine\n- When using pip to install packages, use: uv pip install --system.\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 apk add commands in case the package does not exist.\n- Do not expose any ports.\nHere is the content of several files from the repository that may be relevant:\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Here is the contents readme.md:\n\u003cfile\u003e\n# Test Project\nYou must install `dot` to run the tests.\n\u003c/file\u003e\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Now call the dockerfile tool.",
+     "cache_control": {
+      "type": "ephemeral"
+     }
+    }
+   ]
+  }
+ ],
+ "max_tokens": 8192,
+ "tools": [
+  {
+   "name": "dockerfile",
+   "description": "Helps define a Dockerfile that sets up a dev environment for this project.",
+   "input_schema": {
+    "type": "object",
+    "required": [
+     "from",
+     "extra_cmds"
+    ],
+    "properties": {
+     "from": {
+      "type": "string",
+      "description": "The alpine base image provided to the dockerfile FROM command"
+     },
+     "extra_cmds": {
+      "type": "string",
+      "description": "Extra commands to add to the dockerfile."
+     }
+    }
+   }
+  }
+ ]
+}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: 2025-04-05T00:17:34Z
+Anthropic-Ratelimit-Output-Tokens-Limit: 80000
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-04-05T00:17:36Z
+Anthropic-Ratelimit-Requests-Limit: 4000
+Anthropic-Ratelimit-Requests-Remaining: 3999
+Anthropic-Ratelimit-Requests-Reset: 2025-04-05T00:17:33Z
+Anthropic-Ratelimit-Tokens-Limit: 280000
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-04-05T00:17:34Z
+Cf-Cache-Status: DYNAMIC
+Cf-Ray: 92b4dcf9cae5943a-SJC
+Content-Type: application/json
+Date: Sat, 05 Apr 2025 00:17:36 GMT
+Request-Id: req_018EvH3HMhPpXWH9gksCthDn
+Server: cloudflare
+Via: 1.1 google
+X-Robots-Tag: none
+
+{"id":"msg_0178hjcqP4yFcpvD8FSm9LRp","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the information you've provided, I'll create a Dockerfile for your Go project. From the readme.md, I can see that the project requires the `dot` command, which is part of the Graphviz package, so I'll include this in the Dockerfile."},{"type":"tool_use","id":"toolu_01AGSztHxramwDkeKSevXYHz","name":"dockerfile","input":{"from":"golang:1.24.2-alpine3.21","extra_cmds":"RUN apk add graphviz || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1019,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":151}}
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
new file mode 100644
index 0000000..c27fb1a
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.dockerfile
@@ -0,0 +1,33 @@
+FROM ghcr.io/astral-sh/uv:python3.11-alpine
+
+RUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf
+
+ENV GOTOOLCHAIN=auto
+ENV GOPATH=/go
+ENV PATH="$GOPATH/bin:$PATH"
+
+RUN go install golang.org/x/tools/cmd/goimports@latest
+RUN go install golang.org/x/tools/gopls@latest
+RUN go install mvdan.cc/gofumpt@latest
+
+RUN apk add go || true
+
+# Install DVC (Data Version Control)
+RUN uv pip install --system dvc || true
+
+# Additional Python setup
+RUN uv pip install --system pytest pytest-cov || true
+
+ARG GIT_USER_EMAIL
+ARG GIT_USER_NAME
+
+RUN git config --global user.email "$GIT_USER_EMAIL" && \
+    git config --global user.name "$GIT_USER_NAME"
+
+LABEL sketch_context="5908dbf564085457e184c617549809359247c4f6e45aa8789e94122cecd538fb"
+COPY . /app
+
+WORKDIR /app
+RUN if [ -f go.mod ]; then go mod download; fi
+
+CMD ["/bin/sketch"]
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_python_misery.httprr b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
new file mode 100644
index 0000000..4498293
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_python_misery.httprr
@@ -0,0 +1,81 @@
+httprr trace v1
+3075 1793
+POST https://api.anthropic.com/v1/messages HTTP/1.1
+Host: api.anthropic.com
+User-Agent: Go-http-client/1.1
+Content-Length: 2878
+Anthropic-Version: 2023-06-01
+Content-Type: application/json
+
+{
+ "model": "claude-3-7-sonnet-20250219",
+ "messages": [
+  {
+   "role": "user",
+   "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 {{.From}}\n\nRUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf\n\nENV GOTOOLCHAIN=auto\nENV GOPATH=/go\nENV PATH=\"$GOPATH/bin:$PATH\"\n\nRUN go install golang.org/x/tools/cmd/goimports@latest\nRUN go install golang.org/x/tools/gopls@latest\nRUN go install mvdan.cc/gofumpt@latest\n\n{{.ExtraCmds}}\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\"\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\nCMD [\"/bin/sketch\"]\n```\n\nIn particular:\n- Assume it is primarily a Go project. For a minimal env, prefer 1.24.2-alpine3.21 as a base image.\n- If any python is needed at all, switch to using a python alpine image as a the base and apk add go.\n  Favor using uv, and use one of these base images, depending on the preferred python version:\n    ghcr.io/astral-sh/uv:python3.13-alpine\n    ghcr.io/astral-sh/uv:python3.12-alpine\n    ghcr.io/astral-sh/uv:python3.11-alpine\n- When using pip to install packages, use: uv pip install --system.\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 apk add commands in case the package does not exist.\n- Do not expose any ports.\nHere is the content of several files from the repository that may be relevant:\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Here is the contents README.md:\n\u003cfile\u003e\n# Our amazing repo\n\nTo use this project you need python 3.11 and the dvc tool\n\u003c/file\u003e\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Now call the dockerfile tool.",
+     "cache_control": {
+      "type": "ephemeral"
+     }
+    }
+   ]
+  }
+ ],
+ "max_tokens": 8192,
+ "tools": [
+  {
+   "name": "dockerfile",
+   "description": "Helps define a Dockerfile that sets up a dev environment for this project.",
+   "input_schema": {
+    "type": "object",
+    "required": [
+     "from",
+     "extra_cmds"
+    ],
+    "properties": {
+     "from": {
+      "type": "string",
+      "description": "The alpine base image provided to the dockerfile FROM command"
+     },
+     "extra_cmds": {
+      "type": "string",
+      "description": "Extra commands to add to the dockerfile."
+     }
+    }
+   }
+  }
+ ]
+}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: 2025-04-05T00:17:39Z
+Anthropic-Ratelimit-Output-Tokens-Limit: 80000
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-04-05T00:17:42Z
+Anthropic-Ratelimit-Requests-Limit: 4000
+Anthropic-Ratelimit-Requests-Remaining: 3999
+Anthropic-Ratelimit-Requests-Reset: 2025-04-05T00:17:39Z
+Anthropic-Ratelimit-Tokens-Limit: 280000
+Anthropic-Ratelimit-Tokens-Remaining: 280000
+Anthropic-Ratelimit-Tokens-Reset: 2025-04-05T00:17:39Z
+Cf-Cache-Status: DYNAMIC
+Cf-Ray: 92b4dd1b7f3d943a-SJC
+Content-Type: application/json
+Date: Sat, 05 Apr 2025 00:17:42 GMT
+Request-Id: req_01TzHQukmmrk6cTHsyxuMSuZ
+Server: cloudflare
+Via: 1.1 google
+X-Robots-Tag: none
+
+{"id":"msg_01DVLCsdrDvzRHv7221La4Mw","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the README.md file, I can see that this project requires Python 3.11 and the DVC tool. Given this information, I'll create a Dockerfile that uses a Python 3.11 Alpine image as the base and includes the necessary tools."},{"type":"tool_use","id":"toolu_012FnmKYSqbhwr4xkAySuwgV","name":"dockerfile","input":{"from":"ghcr.io/astral-sh/uv:python3.11-alpine","extra_cmds":"RUN apk add go || true\n\n# Install DVC (Data Version Control)\nRUN uv pip install --system dvc || true\n\n# Additional Python setup\nRUN uv pip install --system pytest pytest-cov || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":1026,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":199}}
\ 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
new file mode 100644
index 0000000..a6acdb7
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.dockerfile
@@ -0,0 +1,28 @@
+FROM golang:1.24.2-alpine3.21
+
+RUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf
+
+ENV GOTOOLCHAIN=auto
+ENV GOPATH=/go
+ENV PATH="$GOPATH/bin:$PATH"
+
+RUN go install golang.org/x/tools/cmd/goimports@latest
+RUN go install golang.org/x/tools/gopls@latest
+RUN go install mvdan.cc/gofumpt@latest
+
+RUN npm install -g corepack && \
+    corepack enable || true
+
+ARG GIT_USER_EMAIL
+ARG GIT_USER_NAME
+
+RUN git config --global user.email "$GIT_USER_EMAIL" && \
+    git config --global user.name "$GIT_USER_NAME"
+
+LABEL sketch_context="b38624baa0989968c26bf1a8b3f1c322e80ae65fa51c57743bd34eac2d5e0529"
+COPY . /app
+
+WORKDIR /app
+RUN if [ -f go.mod ]; then go mod download; fi
+
+CMD ["/bin/sketch"]
\ No newline at end of file
diff --git a/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
new file mode 100644
index 0000000..32887bf
--- /dev/null
+++ b/dockerimg/testdata/testcreatedockerfile_repo_with_readme_and_workflow.httprr
@@ -0,0 +1,85 @@
+httprr trace v1
+3524 1724
+POST https://api.anthropic.com/v1/messages HTTP/1.1
+Host: api.anthropic.com
+User-Agent: Go-http-client/1.1
+Content-Length: 3327
+Anthropic-Version: 2023-06-01
+Content-Type: application/json
+
+{
+ "model": "claude-3-7-sonnet-20250219",
+ "messages": [
+  {
+   "role": "user",
+   "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 {{.From}}\n\nRUN apk add bash git make jq sqlite gcc musl-dev linux-headers npm nodejs go github-cli ripgrep fzf\n\nENV GOTOOLCHAIN=auto\nENV GOPATH=/go\nENV PATH=\"$GOPATH/bin:$PATH\"\n\nRUN go install golang.org/x/tools/cmd/goimports@latest\nRUN go install golang.org/x/tools/gopls@latest\nRUN go install mvdan.cc/gofumpt@latest\n\n{{.ExtraCmds}}\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\"\n\nLABEL sketch_context=\"{{.InitFilesHash}}\"\nCOPY . /app\n\nWORKDIR /app{{.SubDir}}\nRUN if [ -f go.mod ]; then go mod download; fi\n\nCMD [\"/bin/sketch\"]\n```\n\nIn particular:\n- Assume it is primarily a Go project. For a minimal env, prefer 1.24.2-alpine3.21 as a base image.\n- If any python is needed at all, switch to using a python alpine image as a the base and apk add go.\n  Favor using uv, and use one of these base images, depending on the preferred python version:\n    ghcr.io/astral-sh/uv:python3.13-alpine\n    ghcr.io/astral-sh/uv:python3.12-alpine\n    ghcr.io/astral-sh/uv:python3.11-alpine\n- When using pip to install packages, use: uv pip install --system.\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 apk add commands in case the package does not exist.\n- Do not expose any ports.\nHere is the content of several files from the repository that may be relevant:\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Here is the contents .github/workflows/test.yml:\n\u003cfile\u003e\nname: Test\non: [push]\njobs:\n  test:\n    runs-on: ubuntu-latest\n    steps:\n      - uses: actions/checkout@v2\n      - uses: actions/setup-node@v3\n        with:\n          node-version: '18'\n      - name: Install and activate corepack\n        run: |\n          npm install -g corepack\n          corepack enable\n      - run: go test ./...\n\u003c/file\u003e\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Here is the contents README.md:\n\u003cfile\u003e\n# Test Project\nA Go project for testing.\n\u003c/file\u003e\n\n"
+    },
+    {
+     "type": "text",
+     "text": "Now call the dockerfile tool.",
+     "cache_control": {
+      "type": "ephemeral"
+     }
+    }
+   ]
+  }
+ ],
+ "max_tokens": 8192,
+ "tools": [
+  {
+   "name": "dockerfile",
+   "description": "Helps define a Dockerfile that sets up a dev environment for this project.",
+   "input_schema": {
+    "type": "object",
+    "required": [
+     "from",
+     "extra_cmds"
+    ],
+    "properties": {
+     "from": {
+      "type": "string",
+      "description": "The alpine base image provided to the dockerfile FROM command"
+     },
+     "extra_cmds": {
+      "type": "string",
+      "description": "Extra commands to add to the dockerfile."
+     }
+    }
+   }
+  }
+ ]
+}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: 2025-04-05T00:17:31Z
+Anthropic-Ratelimit-Output-Tokens-Limit: 80000
+Anthropic-Ratelimit-Output-Tokens-Remaining: 80000
+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-04-05T00:17:33Z
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+Anthropic-Ratelimit-Tokens-Reset: 2025-04-05T00:17:31Z
+Cf-Cache-Status: DYNAMIC
+Cf-Ray: 92b4dce8bbcf943a-SJC
+Content-Type: application/json
+Date: Sat, 05 Apr 2025 00:17:33 GMT
+Request-Id: req_01HPsqm46UTtSfiiJ5GY6Fvg
+Server: cloudflare
+Via: 1.1 google
+X-Robots-Tag: none
+
+{"id":"msg_01HFWnuUBbvGmusGRZJbCKq2","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"Based on the provided files and requirements, I'll create a Dockerfile for this Go project.\n\nThe `.github/workflows/test.yml` indicates this is primarily a Go project with some Node.js dependencies. The workflow shows it uses Node.js 18 and corepack, so I'll include these in the extra commands."},{"type":"tool_use","id":"toolu_01AAUCno3BKmEJcZb4XWzQJ4","name":"dockerfile","input":{"from":"golang:1.24.2-alpine3.21","extra_cmds":"RUN npm install -g corepack && \\\n    corepack enable || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1139,"cache_read_input_tokens":0,"output_tokens":171}}
\ No newline at end of file