docker-cleanup.sh

docker_ps_exited() {
  docker ps -a -q -f status=exited
}

docker_dangling_images() {
  docker images -f 'dangling=true' -q
}

docker_cleanup() {
  local pids
  local images

  pids=$(docker_ps_exited)
  if [[ "$pids" == "" ]]; then
    echo 'no containers to remove'
  else
    docker rm -v $pids
  fi

  images=$(docker_dangling_images)
  if [[ "$images" == "" ]]; then
    echo 'no images to remove'
  else
    docker rmi $images
  fi
}