SHELL

docker prune -a

docker system prune [OPTIONS]

docker prune

docker system prune [OPTIONS]
--all , -a		Remove all unused images not just dangling ones
--filter		API 1.28+
Provide filter values (e.g. 'label=<key>=<value>')
--force , -f		Do not prompt for confirmation
--volumes		Prune volumes

docker system prune

$ docker system prune -a

docker container prune

$ docker container prune

docker image prune

$ docker image prune -a