This script is used for deleting old Azure Container Registry tags

delete-old-acr-tags.sh

#!/usr/bin/env bash

az login

az account set --subscription <subscription-id>

ACR_NAME=<acr-name>
REPO_NAME=<acr-repo-name>
OLD_IMAGE_TAGS=$(az acr repository show-tags --name $ACR_NAME --repository $REPO_NAME -o tsv)

for TAG in $OLD_IMAGE_TAGS;
do
 if [[ $TAG == <some-prefix>* ]]; # Wildcard match. Remove this for deleting everything
 then
  echo "TAG: $TAG"
  az acr repository delete -y --name $ACR_NAME --image $REPO_NAME:$TAG
 fi
done

echo 'Finished!'