A reproducible minecraft server targeting VPS machines.

• Compressed image is 102 MiB.
• Stripped JRE with jlink.
• With Pufferfish server for Minecraft 1.20.4. Also provides optimized settings.
• Requires docker 20.10.10 or newer. Relevant thread.

Usage:

• $CPULIMIT: Set CPU usage cap. Uses limitcpu.
• $JAVAOPTS: Set extra JVM options.
• Mount your server data folder at /data.

Build docker image:

nix-build docker-server.nix

Build, load, run:

docker load < $(nix-build docker-server.nix)
docker run -v ./data:/data -e "CPULIMIT=200" -p 25565:25565 pufferfish-1.20.4:1.0.0