Docker is a platform to build Linux containers.
Installing Docker via XBPS
# xbps-install docker
Installing Docker Compose
Docker Compose is a tool to create and run multi-container Docker apps.
# xbps-install docker-compose
Starting the Docker daemon
Be sure to enable and start the service before trying to use it. If it is not enabled, it won't work.
# ln -s /etc/sv/docker /var/service/
For more documentation about using services, see for example runit.
Command line interaction with CUPS
For more information about Docker commands, please read the official documentation.