There's a gap in my knowledge so far, which I think is mirrored in this post: I have been piecing together my server by hand, and I _know_ I will regret this at some point, but I don't know how I want to solve this yet. I don't want to involve Docker in this setup. Perhaps I should go back to Saltstack or Ansible, or maybe there's something in Nix for me, or snap/flatpack maybe, I don't know. There's a good chance I'll just never solve it, but it seems like there's a gap there that's waiting for a great, simple, small solution (or it exists and I just don't know about it).
So after all these years (decades now) of learning and working in linux every, single, day, I still have a lot to learn! :D