Generate secure multi-stage Dockerfiles for containerizing applications.
npx skills add https://github.com/rigerc/ha-apps --skill dockerfile-rigerc
Please help me install this Agent Skill. Skill: dockerfile Source: https://github.com/rigerc/ha-apps/tree/main/.claude/skills/dockerfile Command: npx skills add https://github.com/rigerc/ha-apps --skill dockerfile-rigerc
Generating Dockerfiles that are secure, efficient, and production-ready for containerizing applications.
Use this skill to generate a Dockerfile for a Node.js application that builds with a multi-stage process and produces a minimal runtime image.
High-intent search queries and answers about installing and using this skill.
A production-ready Dockerfile uses multi-stage builds to separate the build environment from the final runtime image, minimizing size and attack surface. It enforces best practices for base image selection, layer ordering, and proper ENTRYPOINT configuration.
The best way to minimize Docker image size is implementing multi-stage builds, which compile dependencies in an intermediate stage and copy only essential runtime artifacts to a slim base image. This approach discards build tools and reduces the final image footprint.
Handle ARG and ENV variables by declaring them after static layers like WORKDIR and package installations to optimize build cache. This ensures frequently changing environment variables invalidate only subsequent layers, preserving cached dependencies and speeding up builds.
Yes, adding a HEALTHCHECK instruction to your Dockerfile improves production readiness by allowing Docker to monitor container health and automatically restart unhealthy instances. It should be included alongside proper EXPOSE and CMD or ENTRYPOINT configurations.
You should refactor an existing Dockerfile when your container image is too large, build times are slow, or security vulnerabilities are present. Refactoring implements multi-stage builds, optimizes layer caching, and enforces minimal base image selection for production readiness.
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