Minecraft server for Cloudron exists but I suggest a truly open source voxel game: Minetest. Docker images exists already.
Bump! Just came across this. Here are some links:
I would love to see this as well. Am experimenting with Minetest at my lab. Is there any chance we could try this?
Trying to package it here: https://git.atridad.dev/alt-ron/cloudron-minetest-app
So far it appears to be fine. I need to do 2 things: