I only host 3rd party daemons (nothing custom) and only on my local network (plus Tailscale) so Docker’s great for handling package management and init, since I get up-to-date versions of a far broader set of services than Debian or ubuntu’s repos, clean isolation for easy management, and init/restarts are even all free. Plus it naturally documents what I need to back up (any “mounted” directories)

Docker lets my OS be be boring (and lets me basically never touch it) while having up to date user-facing software. No “well, this new version fixes a bug that’s annoying me, but it’s not in Debian stable… do I risk a 3rd party back port repo screwing up my system or other services, or upgrade the whole OS just to get one newer package, which comes with similar risks?”

I just use shell scripts to launch the services, one script per service. Run the script once, forget about it until I want to upgrade it. Modify the version in the script, take the container down and destroy it (easily automated as part of the scripts, but I haven’t bothered), run the script. Done, forget about it again until next time.

Almost all the commands I run on my server are basic file management, docker stuff, or zfs commands. I could switch distros entirely and hardly even notice. Truly a boring OS.