Cleaner for docker containers

cleanup_docker.sh

#!/bin/bash

set -o errexit

echo "Removing exited docker containers..."
docker ps -a -f status=exited | grep ^data | awk '{print $1}' | xargs -r docker rm -v
#docker ps -a -f status=exited -q | xargs -r docker rm -v

echo "Removing dangling images..."
docker images --no-trunc -q -f dangling=true | xargs -r docker rmi

echo "Removing unused docker images"
images=($(docker images | tail -n +2 | awk '{print $1":"$2}'))
containers=($(docker ps -a | tail -n +2 | awk '{print $2}'))

containers_reg=" ${containers[*]} "
remove=()

for item in ${images[@]}; do
  if [[ ! $containers_reg =~ " $item " ]]; then
    remove+=($item)
  fi
done

remove_images=" ${remove[*]} "

echo ${remove_images} | xargs -r docker rmi
echo "Done"

To clean all unused containers run (it won't remove any important docker containers):

wget https://gist.githubusercontent.com/egel/1d392601f3016fef8b8a/raw/e54c4224366c301928e565add7f34197327ab1f1/cleanup_docker.sh -q -O - | bash