I have Kodi running in a docker container with gui (even HDR support) on my otherwise “headless” server. Kodi just has the most flexibility because of it’s plugins.

Which fom factor do you have? And did you install powertop and tlp? The newer Intel CPUs need a little more power in idle. Old comment as reference: https://www.reddit.com/r/homelab/comments/m4oif7/comment/gqvs35l/

I had an optiplex 3060 micro with 8500t, 24gb ram and 2 ssds idling around 3-5watts.

One of the few options that allow docker conf via labels. Will try it, currently using caddy.