Discussion on: Docker Registry v2 Cleanup?

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Are you talking about your local machine or you docker registry?

If you are asking about your local machine, you can use docker system prune -a .
It will remove everything that is not usedb by your running containers.

Keff • May 13 '20

Our registry, I will specify it in the post for other readers also.

Victor Osório • May 13 '20

Nice!
I have the same problem in the past, but when I was using Amazon ECR.

So for solving this problem I made a script and installed it on a crontab.

#!/bin/bash
REPOS=$(aws ecr describe-repositories --region sa-east-1 --query ‘repositories[].repositoryName’ --output text)
for repo in $REPOS; do
    TAGS=$(aws ecr list-images --region sa-east-1 --repository-name $repo --filter tagStatus=UNTAGGED --query ‘imageIds[].imageDigest’ --output text)
    for tag in $TAGS; do
        echo “Deleting image: $tag”
        aws ecr batch-delete-image --region sa-east-1 --repository-name $repo --image-ids imageDigest=$tag
    done
done

Victor Osório • May 13 '20

This solution is for ECR, but you can build a similar solution for your server.

Keff • May 13 '20

Nice, If we don't find an official way we will definitely be using this or inspiring from it, thanks for sharing :)