Way to delete the images from Private Docker Registry - docker

Question

I have a Private Docker Registry set up and i have pushed some images from other machine to this registry.
Its a V2 registry.
I don't know a novel way to delete the images from repositories since these pushed images doesn't get listed in CLI for "docker images".
Can anyone suggest me the proper way to delete those images from the disk?
Appreciate a lot for answer.
Thanks

Answer 1

I have posted same answer to other question. Maybe it would be useful for you.
I've faced same problem with my registry then i tried the solution listed below from a blog page. It works.
Step 1: Listing catalogs
You can list your catalogs by calling this url:
http://YourPrivateRegistyIP:5000/v2/_catalog
Response will be in the following format:
{
"repositories": [
<name>,
...
]
}
Step 2: Listing tags for related catalog
You can list tags of your catalog by calling this url:
http://YourPrivateRegistyIP:5000/v2/<name>/tags/list
Response will be in the following format:
{
"name": <name>,
"tags": [
<tag>,
...
]
}
Step 3: List manifest value for related tag
You can run this command in docker registry container:
curl -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X GET http://localhost:5000/v2/<name>/manifests/<tag> 2>&1 | grep Docker-Content-Digest | awk '{print ($3)}'
Response will be in the following format:
sha256:6de813fb93debd551ea6781e90b02f1f93efab9d882a6cd06bbd96a07188b073
Run the command given below with manifest value:
curl -v --silent -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X DELETE http://127.0.0.1:5000/v2/<name>/manifests/sha256:6de813fb93debd551ea6781e90b02f1f93efab9d882a6cd06bbd96a07188b073
Step 4: Delete marked manifests
Run this command in your docker registy container:
bin/registry garbage-collect /etc/docker/registry/config.yml
Here is my config.yml
root#c695814325f4:/etc# cat /etc/docker/registry/config.yml
version: 0.1
log:
fields:
service: registry
storage:
cache:
blobdescriptor: inmemory
filesystem:
rootdirectory: /var/lib/registry
delete:
enabled: true
http:
addr: :5000
headers:
X-Content-Type-Options: [nosniff]
health:
storagedriver:
enabled: true
interval: 10s
threshold: 3

Answer 2

Currently you cannot delete an image from a docker registry without an external tool. The easiest way to do so would be to use this script to do so, keeping in mind that it does require downtime.