Multi-Stage Builds for Lean Production Images
Master multi-stage Dockerfiles to compile or bundle your app in a build stage and copy only the artifacts into a tiny runtime image.
The Fat Image Problem
A single-stage build often ships compilers, dev dependencies, and source code into production. The result is a large, slower-to-pull, larger-attack-surface image.
What Is a Multi-Stage Build
A multi-stage build uses several FROM statements in one Dockerfile. Earlier stages build artifacts; a final lean stage copies only what it needs to run.
All lessons in this course
- Containerizing a Web Application
- Optimizing Docker Images
- Security & Production Best Practices
- Multi-Stage Builds for Lean Production Images