Writing a good Dockerfile
Turn a slow, bloated Dockerfile into a small, fast, secure one: choosing a base image, ordering layers for the cache, .dockerignore, multi-stage builds, running as a non-root user, keeping secrets out, and health checks.
CodexBash, , 5 min read
A Dockerfile that "works" can still produce a 2 GB image that rebuilds from scratch on every change, runs as root and carries your API keys inside it. The difference between that and a good Dockerfile is a handful of habits. This article walks through them with a Node.js example, though every point applies to Java, Python and Go as well.
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