Example script for how to delete image from docker repositry 2.4

image_delete.sh

#!/bin/bash -ex

name='kubernetes/pause'

docker stop registry && docker rm -v registry ||:
rm -rf /var/registry/* ||:

ENV='-e REGISTRY_STORAGE_DELETE_ENABLED=true -e REGISTRY_LOG_LEVEL=debug'
docker run -d -p 5000:5000 --restart=always $ENV --volume /var/registry:/var/lib/registry --name registry registry:2.4
docker pull $name
docker tag $name localhost:5000/$name
docker push $_

curl -siL -X GET -w '\nresponse: %{http_code}\n' http://localhost:5000/v2/

header='Accept:application/vnd.docker.distribution.manifest.v2+json'
curl -siL -X GET -H $header http://localhost:5000/v2/_catalog
curl -siL -X GET -H $header http://localhost:5000/v2/$name/tags/list

blob=$(curl -sL -X GET -H $header http://localhost:5000/v2/$name/manifests/latest)
jq '.' <<<$blob
digest=$(jq -r '(.config.digest)' <<<$blob)

du -sh /var/registry
curl -siL -X DELETE http://localhost:5000/v2/$name/manifests/$digest
du -sh /var/registry