Best Practices for Writing Dockerfiles
Why Dockerfile Best Practices Matter Poorly written Dockerfiles lead to large, insecure, and hard-to-maintain container images. Following best practices ensures faster builds, smaller images, better security, and improved maintainability. 1. Use Official or Minimal Base Images Choose minimal or well-maintained base images like: FROM alpine:3.19 # or FROM python:3.11-slim 2. Pin Versions Explicitly Avoid surprises by pinning versions of dependencies and packages: RUN apt-get install -y curl=7.68.0-1ubuntu2.6 3. Combine RUN Commands Reduce layers by chaining commands: ...