I have an Intel NUC running plex media server on ubuntu headless server. It's running beautifully, and barely uses the nuc's resources. The videos are stored on a synology ds923+ NAS.
I'm thinking of adding a couple of new services to the NUC and would like to move to a dockerised setup. This would involve moving the plexmediaserver into a docker.
Is there a good way to do this without having to recreate and rescan all the plex video libraries?
I accomplished this and found it was pretty easy. Like everyone else said, just point the volumes to the right directories. Backup your Plex data (not the media) a few times in case you screw up and it starts to index existing files as if it were old files.
Probably the hardest part for me was 'claiming' the server using their startup token. And even then that was fairly easy.
You're hosting on Ubuntu so this isn't a problem, but PMS basically requires its own IP on your intranet (not the Docker internal subnet) so Mac's Docker implementation fails to provide this capability.