Automatic Docker Clean

gistfile1.txt

#!/bin/bash

echo "clean containers ..."
docker ps --filter status=exited -aq | xargs --no-run-if-empty docker rm -vf
echo "clean images ..."
docker images --quiet --filter=dangling=true | xargs --no-run-if-empty docker rmi -f

docker images | grep old | awk '{ print $1 " " $2 }' | while read LINE
do
	IMAGE=$(echo $LINE | cut -d' ' -f1)
	TAG=$(echo $LINE | cut -d' ' -f2)
	d1=$(date -d $TAG +%s)
	d2=$(date +%s)

	if [[ $(( (((d1-d2) > 0 ? (d1-d2) : (d2-d1)) + 43200) / 86400 )) -gt 30 ]]; then
		docker rmi -f $IMAGE:$TAG
	fi
done