That’s why nobody is self-hosting Plex’s authentication server, they’re hosting the Plex Media Server. I think you’re getting confused.

Oh wait, I guess I completely misread what you said lol

Okay, I haven’t tried using docker, so I can’t help directly, but I set up my Plex server with help from Jellyfin documentation. You could probably find something in there about setting up hardware acceleration on docker, if you haven’t already. They should work with Plex, as well.

Are you running it on baremetal or in a VM?

Can you explain what you mean by not being able to self-host?