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ku5icku5ic/claude-kit/skills/docker-patterns/SKILL.md

docker-patterns

Skill2 starsChanged 8 days agoMITView on GitHub

Docker patterns for Dockerfile best practices, multi-stage builds, Compose service configuration, networking, volumes, and security. Use whenever the project contains a `Dockerfile`, a Compose file, or `.dockerignore`, OR the user asks about containers, image builds, or Compose service wiring, even if Docker is not mentioned by name.

43 other projects use a version of this.

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SKILL.md

Docker patterns

Docker Engine 29.8.1. Compose Specification (current format, supersedes 2.x and 3.x). Verify at https://docs.docker.com/engine/release-notes/ and https://docs.docker.com/compose/compose-file/.

Reference files

FileCovers
dockerfile.mdBase image selection, layer caching, RUN/COPY/ADD/CMD/ENTRYPOINT/USER/WORKDIR, .dockerignore
multi-stage.mdMulti-stage builds, named stages, COPY --from, --target, BuildKit
compose.mdServices, build, ports, depends_on with healthcheck, restart, env_file, profiles, secrets
networking.mdBridge/host/none drivers, user-defined networks, service discovery, port publishing
volumes.mdNamed volumes vs bind mounts vs tmpfs, when to use each, Compose volume declarations
security.mdNon-root user, minimal base images, image pinning, .dockerignore, Docker Scout, secrets
anti-patterns.mdSeverity-labeled anti-patterns to flag in review

References

Version notes

Checked: 2026-09-26 against https://docs.docker.com/engine/release-notes/ and https://docs.docker.com/compose/compose-file/04-version-and-name/

Docker Engine and Docker Compose release independently. The Compose Specification supersedes the versioned format (version: "3"), and the version top-level key is now ignored.

  • 29.8.1 (2026-09-15): bug fixes only (containerd image store, logging, networking); no guidance change.
  • 29.4.2 (2026-05-01): previous baseline.

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