docker system info
https://docs.docker.com/v17.12/edge/engine/reference/commandline/system_info/docker system events
https://docs.docker.com/v17.12/edge/engine/reference/commandline/system_events/docker system df
docker system prune -a
docker system info
https://docs.docker.com/v17.12/edge/engine/reference/commandline/system_info/docker system events
https://docs.docker.com/v17.12/edge/engine/reference/commandline/system_events/docker system df
docker system prune -a