Building spigot

docker build -t spigot .

Running spigot

docker run -d -v /<local-filesystem-path>:/data -p 25565:25565 --name="minecraft" spigot

Upgrading between versions

• Update the SPIGOT_VERSION
• Rebuild the image

When upgrading to the next major version:

• Upgrade to the latest minor of the current major version (ie, if you are in 1.14.1 and want to go up to 1.15.x, upgrade to the latest 1.14 build) first.
• Rerun the server with the argument --forceUpgrade docker run ... spigot --forceUpgrade
• Wait for the Upgrading all chunks to complete
• Stop the server
• Upgrade to the next major version

What to put into the /data folder

Nothing is needed for the server to run. Howether this is the place to put your minecraft config files, and realms if you already have these.