What are the best practices for using Docker with Travis CI?

What are the best practices for using Docker with Travis CI?

Some best practices include using a lightweight base image, caching dependencies, and optimizing your Dockerfile.

Can you explain how to cache dependencies effectively?

You can cache dependencies by using the travis.yml configuration to specify cache paths, which speeds up builds.

What should I include in my Dockerfile for a Node.js application?

Include a specific Node.js version, copy your package.json, and run npm install to ensure all dependencies are installed.

How can I ensure my Docker images are secure?

Regularly update your base images, scan for vulnerabilities, and avoid running as root inside the container.