what is the reason you shy away from ubuntu? Canonical. Snaps. Ubuntu is the first server OS I used, and while it was quite good I think I prefer using a base distrobox instead of a derivative. If I’m going to use Debian, I’ll use Debian. Not Debian with corporate stuff on top.
As for SELinux: I’ve tried around a year ago. But as soon as I started doing stuff with users and tweaking docker permissions things went wrong and I just set it to permissive. Maybe I’ll try that again soon, because other parts of managing servers have become much easier over time as I learned. I agree that having a server without SELinux is quite dumb and not very professional.
Just ordered the PCBs for my second, custom layout split keyboard, the triboard. I’m also working on a service status watcher + page called swec. It will eventually be able to notify you through gotify whenever your services are down, and maybe even redirect clients to the status page. Some other features include custom downtime messages.