Okay, I think I found a bit of a catch with Incus or LXD. I want a solution with a web UI, and while Incus has one, it seems to have access control either browser certificate based or with a central auth server. Neither are a good solution for me - I would much prefer regular user auth with the option to use an auth server at some point (but I don't want to take all of this on all at once.)
I hope it's okay that I keep coming back to you with these questions. You seem to be a strong Incus-evangelist. :)
I guess I could only expose the web UI on localhost and create an SSH tunnel in order to use it...? Not so good on mobile though, which is the strongest reason for a webui.