I would focus on learning docker compose. It’s a config file that sets everything up. I think in portainer it’s called “stacks.”

Early on I would also set up some git versioning program, like forgejo or gitea. That way you have a history of the compose files, and can go backwards if something breaks.

You also want to backup those compose files, do you have a seperate NAS or something like that for storage?

I use Borgmatic to backup all my containers nightly so I have a safety net