Hey All,
With the new Plexamp headless builds I started working on getting those running under docker across my players just to make upgrades and rollbacks work better. Note that at the moment this does require the device running docker/podman to have an audio device attached and the builds are not fully optimized for space (yet). If you have any questions, suggestions, etc just let me know or feel free to file an issue on the repo or submit a pull request 
Builds are currently tested on an RPi3, RPi4, and Intel NUC
You can find details and instructions here: https://gitlab.com/zonywhoop/plexamp-headless-docker
Ed.
