DEV Community


Discussion on: Demystifying Docker Compose

pantsme profile image
Antonio Savage

Because I'm picky, size matters with Docker images so you might want to clean up the apt cache after you're done installing those apps. Just add a line after the apt installs
rm -rf /var/lib/apt/lists/*

Also, I'm not familiar with Ruby but you may be able to do some cleanup too after the build command or even build the app in a throwaway container and use the artifact in this one. Check it out here.