dockerimg: more exacting prompt for building a dockerfile

This morning's claude moving target has forgotten how a Dockerfile
works, and it tries injecting direct shell into the file. Tell it
everything should start with RUN.

For #83
For #85
diff --git a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
index 5a4643f..b7e43a6 100644
--- a/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
+++ b/dockerimg/testdata/testcreatedockerfile_empty_repo.httprr
@@ -1,9 +1,9 @@
 httprr trace v1
-3767 1928
+3814 2302
 POST https://api.anthropic.com/v1/messages HTTP/1.1

 Host: api.anthropic.com

 User-Agent: Go-http-client/1.1

-Content-Length: 3570

+Content-Length: 3617

 Anthropic-Version: 2023-06-01

 Content-Type: application/json

 

@@ -40,7 +40,7 @@
     "properties": {
      "extra_cmds": {
       "type": "string",
-      "description": "Extra commands to add to the dockerfile."
+      "description": "Extra dockerfile commands to add to the dockerfile. Each command should start with RUN."
      }
     }
    }
@@ -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: 2025-05-06T03:31:08Z

+Anthropic-Ratelimit-Input-Tokens-Reset: 2025-05-12T22:11:34Z

 Anthropic-Ratelimit-Output-Tokens-Limit: 80000

 Anthropic-Ratelimit-Output-Tokens-Remaining: 80000

-Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-06T03:31:10Z

+Anthropic-Ratelimit-Output-Tokens-Reset: 2025-05-12T22:11:38Z

 Anthropic-Ratelimit-Requests-Limit: 4000

 Anthropic-Ratelimit-Requests-Remaining: 3999

-Anthropic-Ratelimit-Requests-Reset: 2025-05-06T03:31:07Z

+Anthropic-Ratelimit-Requests-Reset: 2025-05-12T22:11:34Z

 Anthropic-Ratelimit-Tokens-Limit: 280000

 Anthropic-Ratelimit-Tokens-Remaining: 280000

-Anthropic-Ratelimit-Tokens-Reset: 2025-05-06T03:31:08Z

+Anthropic-Ratelimit-Tokens-Reset: 2025-05-12T22:11:34Z

 Cf-Cache-Status: DYNAMIC

-Cf-Ray: 93b56723daa0ce9c-SJC

+Cf-Ray: 93ed40aa2a0a15f1-SJC

 Content-Type: application/json

-Date: Tue, 06 May 2025 03:31:11 GMT

-Request-Id: req_011CNqa2AVC9m56dtxX5MqbJ

+Date: Mon, 12 May 2025 22:11:38 GMT

+Request-Id: req_011CP4QKDoEASpcodpKxqnmc

 Server: cloudflare

 Strict-Transport-Security: max-age=31536000; includeSubDomains; preload

 Via: 1.1 google

 X-Robots-Tag: none

 

-{"id":"msg_01UEUtJaKVQygbeUjy9apyfW","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 template provided, I'll add minimal but useful extra commands."},{"type":"tool_use","id":"toolu_01GSRQTjFTpsavcRqaZCKaRP","name":"dockerfile","input":{"extra_cmds":"# Install any Go tools specific to development\nRUN go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true\n\n# Install any Python dependencies if needed (allow failures)\nRUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi\n\n# Pre-compile the project if possible\nRUN if [ -f go.mod ]; then go build -v ./... || true; fi"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1277,"cache_read_input_tokens":0,"output_tokens":195}}
\ No newline at end of file
+{"id":"msg_01CqJZHCyfadjtubpXjTZQax","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[{"type":"text","text":"I'll help you create a Dockerfile using the provided template. Based on your instructions, I need to create a minimal set of extra commands for a Go project, ensuring Python setup commands don't stop the build if they fail, and add safety measures to apt-get commands."},{"type":"tool_use","id":"toolu_01R7nDPwC4q2mK9em7o6zqja","name":"dockerfile","input":{"extra_cmds":"RUN go mod tidy || true\n\n# Install any Python dependencies if a requirements.txt exists, but continue on failure\nRUN if [ -f requirements.txt ]; then pip3 install -r requirements.txt || true; fi\n\n# Install any npm dependencies if package.json exists\nRUN if [ -f package.json ]; then npm install || true; fi\n\n# Install additional tools that might be useful for Go development\nRUN go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest || true\n\n# Install any additional needed packages\nRUN apt-get update && apt-get install -y --no-install-recommends \\\n    make \\\n    protobuf-compiler \\\n    || true"}}],"stop_reason":"tool_use","stop_sequence":null,"usage":{"input_tokens":4,"cache_creation_input_tokens":1286,"cache_read_input_tokens":0,"output_tokens":278}}
\ No newline at end of file