To build image use docker build https://github.com/FruitBoi/cuberite-docker.git
Optionally, specify a tag docker build -t "cuberite:latest" https://github.com/FruitBoi/cuberite-docker.git
Simple image usage example:
docker run -it -d -p 25565:25565 -p 8080/8080 -v /opt/cuberite:/data cuberite:latest
Server data is copied to /data from /cuberite on container start, /data is where all configurations and the server executables reside.