I was originally going to to go the docker route but honestly just ended up going the binary route and leaving it using sqlite as it’s good enough for now. It’s pretty well documented and a chunk of the prereqs I already had, like the git user creation.
Did have SSH auth issues though, probably becauae I didn’t fully cleanup after uninstalling gitlab (oops), had them in parallel for a bit to migrate the repos, gitlab had it trying to use gitlab-shell which didn’t exist anymore. Probably a better/proper solution but what worked was changing the git user’s home directory back to /home/git as gitlab had it using a gitlab config directory. I welcome anyone giving me a better/cleaner solution for this, on my to do list to do some more cleanup.
Not the person you replied to but for interest, It was 25 hard capped in grade school only because of the program I went through back years ago, though looking now 25-30 is petty consistent in that region as of last year. Highschool was larger, maybe 30, less once going into upper year courses, literally 8 of us took comp sci and that was combined gr11 and 12
Ontario, Canada for reference. 20 seemed low to me too tbh, but not out of the realm of possibility.