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Darwin Dockerfile Safety

Safety rules for modifying Dockerfiles and Containerfiles. Use when editing container build files. Use when this capability is needed.

tomevault-io 175083a 2 files · 1.8 KB Updated
Coding & Dev Tools

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Dockerfile Safety Rules

Allowed Modifications

You MAY add:

  • ARG -- build arguments
  • ENV -- environment variables
  • COPY -- copy files into the image
  • RUN -- install packages or run build commands
  • EXPOSE -- declare ports

Forbidden Modifications

You MUST NOT change:

  • FROM -- base image (changing this breaks the build chain)
  • CMD / ENTRYPOINT -- the container's startup command
  • USER -- the runtime user (security context)
  • WORKDIR -- the working directory

You MUST NOT remove:

  • Existing COPY, RUN, or CMD lines
  • Running processes from CMD (e.g., removing a sidecar process)

When to Stop

If a task requires changing FROM, CMD, USER, or WORKDIR, stop and report that it requires Architect review. Do not proceed.

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tomevault-io/skills-registry/tree/main/the-darwin-project--blackboard--darwin-dockerfile-safety commit 175083ac79

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npx skillmds@latest add tomevault-io/darwin-dockerfile-safety