I'm working with older Docker containers based on Ubuntu versions 16.04 and 18.04 which I rebuild periodically. I've noticed that some apt packages are becoming unavailable, leading me to compile them from source. I'm looking for the best practices to maintain these containers. Should I save the packages internally, or are there any other recommendations? Thanks in advance!
4 Answers
Have you thought about pinning the version of the Ubuntu image or the specific packages? It might help prevent them from disappearing on you. Just a heads up, if you rebuild your image, Docker will try to download all the packages again from scratch.
Just a reminder, standard support for those older versions only lasts about five years. It's something to consider when planning your maintenance.
There's no one-size-fits-all solution. You could set up your own repository to cache those packages, or consider updating your applications to work with a newer version of Ubuntu. That way you're not stuck with outdated support.
Why not just upgrade the base images? Keeping end-of-life systems can cause security and maintenance issues that are often more trouble than it's worth. It's usually better to keep everything up to date for peace of mind.
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