REAR Relax-and-Recover will do entire system point-in-time snapshot backups to a bootable iso or physical USB thumb drive: https://relax-and-recover.org/rear-user-guide/index.html
I use rear for backing up my root, and Borg for packing up user data (for versioning, file recovery), but you can use rear for the entire system too.
Podman-compose is a python script that simply converts a compose file to 'podman run'. It worked fine enough for me, but the caveat being it doesn't have full feature parity and the errors aren't as good. The only thing I couldnt get working was connecting my GPU to jellyfin.
Turning conainers into systemd units is easy: 'podman generate systems --new --name $container_name › $HOME/.config/systems/user/$container_name.service' 'systemctl --user enable --now $container_name'
https://docs.podman.io/en/latest/markdown/podman-generate-systemd.1.html
Managing a legally procured library of media. Piracy is not the only way to get digital music, movies, and books.