SH to list all repositories in docker registry, list all tags of repositorie and remove all images from the tag repositorie

images-in-registry.sh

#!/bin/bash
#
# SH to list all repositories in docker registry, list all tags of repositorie and remove all images from the tag repositorie
#
# Created by: Gustavo Apolinario
# 2017-05-12
#

# curl -X GET localhost:5000/v2/_catalog
# curl -X GET localhost:5000/v2/socsite_apache/tags/list
# curl -X GET localhost:5000/v2/socsite_apache/manifests/latest
# curl -X DELETE localhost:5000/v2/socsite_apache/manifests/sha:...
# curl -X DELETE localhost:5000/v2/socsite_apache/blobs/sha:...

# Registry Container name
CONTAINER_REGISTRY='registry'
# IP from your docker registry
SERVIDOR='localhost'
# port of your registry
PORT=5000

_help ()
{
	echo "Please execute this way"
	echo "$0 --images"
	echo "$0 --tags <IMAGE>"
	echo "$0 --delete <IMAGE> <TAG>"
	exit
}

_get_registry_images ()
{
    CATALOG=$(curl --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET $SERVIDOR:$PORT/v2/_catalog)

	#for i in ; do
		echo "$CATALOG"
	#done
}

_get_registry_image_tags ()
{
	image=$1

    CATALOG=$(curl --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET $SERVIDOR:$PORT/v2/$image/tags/list)

	#for i in ; do
		echo "$CATALOG"
	#done
}


_delete_image ()
{
	image=$1
	tag=$2

	#echo "curl -k -v --silent -H \"Accept: application/vnd.docker.distribution.manifest.v2+json\" -X GET localhost:5000/v2/$image/manifests/$tag 2>&1 | grep Docker-Content-Digest" | awk '{print ($3)}')
	DOCKER_PRIMARY_DIGEST=$(curl -k -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET $SERVIDOR:$PORT/v2/$image/manifests/$tag 2>&1 | grep Docker-Content-Digest | awk '{print ($3)}')
	
	# Remove digests, but the garbage collector will do it
	DOCKER_DIGESTS=$(curl -k -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET $SERVIDOR:$PORT/v2/$image/manifests/$tag 2>&1 | grep digest | awk '{print ($2)}')
	
	# Remove digests, but the garbage collector will do it
	IFS=$'\n'
	for line in $DOCKER_DIGESTS; do
		DOCKER_IMAGE=$(echo $line | cut -d'"' -f 2)
		if [[ "$DOCKER_IMAGE" != "" ]];then
			echo "Deleting Docker digest: $DOCKER_IMAGE"
			curl -X DELETE $SERVIDOR:$PORT/v2/$image/blobs/$DOCKER_IMAGE
			#curl -X DELETE $SERVIDOR:$PORT/v2/$image/manifests/$DOCKER_IMAGE
		fi
	done

	echo "Deleting Docker primary digest: $DOCKER_PRIMARY_DIGEST"
	#curl -X DELETE $SERVIDOR:$PORT/v2/$image/blobs/$DOCKER_PRIMARY_DIGEST
	curl -X DELETE $SERVIDOR:$PORT/v2/$image/manifests/$DOCKER_PRIMARY_DIGEST

	echo $'\n\n'
	echo "Running Garbage Collector to cleanup registry"; echo $'\n'
	GARBAGE_COLLECT=""
	if [[ "$(expr substr $(uname -s) 1 5)" == "MINGW" ]];then
		#windows:
		GARBAGE_COLLECT=$(docker exec $CONTAINER_REGISTRY bin/registry garbage-collect --dry-run //etc/docker/registry/config.yml)
	else
		#linux:
		GARBAGE_COLLECT=$(docker exec $CONTAINER_REGISTRY bin/registry garbage-collect --dry-run /etc/docker/registry/config.yml)
	fi
	echo "$GARBAGE_COLLECT"

# Force Remove not used digests, but the garbage collector should have do it
#	echo "
#
#
#"
#
#	IFS=$'\n'
#	for line in $GARBAGE_COLLECT; do
#		DOCKER_IMAGE=$(echo $line | grep 'deletion:'  | awk '{print ($5)}')
#		if [[ "$DOCKER_IMAGE" != "" ]];then
#			echo "Deleting not used Docker image: $DOCKER_IMAGE\n"
#			curl -X DELETE $SERVIDOR:$PORT/v2/$image/manifests/$DOCKER_IMAGE
#			curl -X DELETE $SERVIDOR:$PORT/v2/$image/blobs/$DOCKER_IMAGE
#		fi
#	done
	#DOCKER_IMAGES=$(echo $GARBAGE_COLLECT | grep 'deletion:')
	#echo "\n\n\n $DOCKER_IMAGES"

}


if [ "$1" == "--images" ]; then
	if [ "$#" -ne 1 ]; then 
		_help
	else
		_get_registry_images
	fi
elif [ "$1" == "--tags" ]; then
	if [ "$#" -ne 2 ]; then 
		_help
	else
		_get_registry_image_tags $2
	fi
elif [ "$1" == "--delete" ]; then
	if [ "$#" -ne 3 ]; then 
		_help
	else
		_delete_image $2 $3
	fi
else
	_help
fi