# Remove all untagged docker images. # - docker rmi - remove image # - docker images -a - show all images # - grep '^' - filter the list down to those entries with no # value in the Repository column # - awk '{print $3}') - show only the image IDs from the output, # feeding it back to `docker rmi` docker rmi $(docker images -a | grep '^ ' | awk '{print $3}')