How can I optimize my Docker builds in Travis CI?

How can I optimize my Docker builds in Travis CI?

You can optimize your Docker builds in Travis CI by using caching, multi-stage builds, and minimizing layers.

What is caching and how does it work in this context?

Caching in Travis CI allows you to save layers of your Docker image, so they don't need to be rebuilt every time.

Can you explain multi-stage builds?

Multi-stage builds let you use multiple FROM statements in your Dockerfile, allowing you to separate build and runtime environments.

How do I set up caching in my .travis.yml file?

You can set up caching by adding a cache section in your .travis.yml file, specifying the paths to cache.