Deleting an image
docker rmi nameofimage
Deleting a container
docker rm containername_or_id # force delete docker rm -f containername_or_id
Force deleting an image
docker rmi imagename # force delete docker rmi -f imagename
Remove a container stuck in a zombie state
rm -rf /var/lib/docker//11667ef16239.../ # Where is the name of your driver (aufs, overlay, btrfs, or devicemapper).