What are the best practices for Docker multi-stage builds?

What are the best practices for Docker multi-stage builds?

Multi-stage builds help reduce image size and improve build efficiency. Key practices include minimizing layers, using specific base images, and cleaning up unnecessary files.

Can you explain how to minimize layers in a Dockerfile?

To minimize layers, combine commands using && in a single RUN statement. This reduces the number of layers created during the build process.

What base images should I use for different stages?

Use lightweight base images like alpine for final stages and more feature-rich images like node or python for build stages.

How can I clean up unnecessary files after the build?

You can use the RUN command to delete temporary files and caches at the end of your build stage to keep the final image clean.