I am interested in this as well. Currently I have nextcloud with Phonetrack, but I would prefer something such simpler with 'less' features that works like G LH.

I've followed the official guide on how to set it up using docker. I had to tweak the compose file in a way it was not mentioned in the docs. Also I have an already set up nginx web server and while I was able to set up a reverse proxy vhost to the reverse proxy that was defined in the compose I wasn't able to get websocket working. I thought of removing the proxy entirely from the compose file and configure the "main" nginx server for lemmy, I just gave up and removed everything because I felt like it doesn't worth the time.