jcorpac Docker Optimization
Production images should be minimal, fast to pull, and secure.
Multi-stage Builds
- Pattern: Use a heavy build image (with compilers/tools) and copy only the compiled artifacts to a tiny runtime image (e.g.,
alpine). - Benefit: Reduces image size by up to 90% and removes build-time vulnerabilities.
Layer Reduction
- Chaining: Chain
apt-get installcommands and clean up in the sameRUNlayer to avoid bloated images.
Best Practices
- Alpine & Distroless: Use the smallest possible OS base.
- Cache Mounting: Use
--mount=type=cachein BuildKit to persist pip/npm caches across builds.