Thank you! I use Debian 11, installed make, build-essential and golang, and still receiving the same message (feels like I should learn how to use these packages first).
Using your file was working, but unfortunately gotify container just stops after some time. I was reading the docs and I must admit I don’t understand a tiny bit :D. Spinning gotify server in docker container was super easy tho. I’d like to get this working, but feels bad for taking your time mate, and I even stole the thread (Sorry OP) lol.