What are the best practices for Docker layer caching in CircleCI?

What are the best practices for Docker layer caching in CircleCI?

To optimize Docker layer caching in CircleCI, consider using a multi-stage build, minimizing the number of layers, and leveraging caching effectively.

Can you explain how multi-stage builds help with caching?

Multi-stage builds allow you to separate the build environment from the final image, reducing the size and number of layers, which enhances caching.

What are some common mistakes to avoid with Docker caching?

Common mistakes include not ordering commands properly, failing to use .dockerignore files, and not taking advantage of layer caching effectively.

How can I check if my caching is working correctly?

You can check the CircleCI build logs for cache hits and misses, and also monitor the image size to see if it decreases over time.