I'm having an issue on the second beta with the driver plugin. Docker can't find the nvidia runtime, so Jellyfin will not start with it enabled. I have a Quadro P620, so I'm using 580.142. My GPU is detected just fine and is showing up in the plugin. I have rebooted a number of times at this point, including totally removing the driver plugin, rebooting, reinstalling, and rebooting again... none of that has helped.