Cleans the old images and exited containers

clean_docker.sh

# Clean the exited containers
docker rm $(sudo docker ps -a | grep Exit | cut -d ' ' -f 1)

# Clean the untagged images (or old images)
docker rmi $(docker images | tail -n +2 | awk '$1 == "<none>" {print $'3'}')

# On Docker 1.9+ you can remove the orphan volumes with the next command
docker volume rm $(docker volume ls -qf dangling=true)