docker-cleanup.sh

#!/usr/bin/env bash

EXITED=$(docker ps -q -f status=exited)
DANGLING=$(docker images -q -f "dangling=true")
if [ "$1" == "--dry-run" ]
then
        echo "==> Would stop containers:"
        echo $EXITED
        echo "==> And images:"
        echo $DANGLING
else
        if [ -n "$EXITED" ]
        then
                docker rm $EXITED
        else
                echo "No containers to remove."
        fi
        if [ -n "$DANGLING" ]
        then
                docker rmi $DANGLING
        else
                echo "No images to remove."
        fi
fi