Docker compose's don't really need to be maintained though. As long as the app doesn't need new components old docker composes should work.

EDIT: Oops, it does look like spacebarchat's docker images have last been updated over 2 years ago:

https://hub.docker.com/r/spacebarchat/server

EDIT2: Although this is outdated, I think their github repo has an action to autobuild docker images on pushes. Still investigating.

EDIT3: Okay, they don't seem to be actually ran.

But using nix to build a docker image is pretty cool.

EDIT4: Oh shit, the docker image build workflows were added just 2 hours ago. Of course they haven't been ran!

Docker support soon, probably.

EDIT5: the workflow ran, but it looks like it's private for now.