Backup/Save all Docker Images to a compressed file

backup-all-docker-images.sh

docker images | tail -n +2 | grep -v "none" | awk '{printf("%s:%s\n", $1, $2)}' | while read IMAGE; do
	echo $IMAGE
	filename="${IMAGE//\//-}"
	filename="${filename//:/-}.docker-image.gz"
	docker save ${IMAGE} | pigz --stdout --best > $filename
done

Pra subir depois:

docker load -i /root/container1.tar
docker images