Script for cleaning up development tags from Azure Container Registry. Images are untagged so that the manifests will get deleted according to the configured retention policy.

acr_cleanup.sh

#!/bin/bash

registry_name=my-registry
hundred_days_ago=$(date -d 'now - 100 days' +%s)

for repo in $(az acr repository list --name $registry_name | jq -r '.[]')
do
    echo '-----------------------------------------------------------------'
    echo $repo
    echo '-----------------------------------------------------------------'

    for tag in $(az acr repository show-tags -n $registry_name --repository $repo --detail | jq -cr '.[] | {name,lastUpdateTime}')
    do
        tag_name=$(echo $tag | jq '.name' | sed -e 's/^"//' -e 's/"$//')
        last_update_time=$(echo $tag | jq '.lastUpdateTime' | sed -e 's/^"//' -e 's/"$//')
        echo $tag_name
        if [[ $tag_name =~ ^develop-[0-9]*$ ]]; then
            tag_time=$(date -d $last_update_time +%s)
            if (( tag_time <= hundred_days_ago )); then
                echo "Tag $tag_name is older than 100 days"
                # az acr repository delete -n $registry_name --image $repo:$tag_name -y
                az acr repository untag -n $registry_name --image $repo:$tag_name
            fi
        fi
    done
done