Deletes untagged images from GitHub Container Registry package using gh cli

clean_packages.sh

#!/bin/bash
set -eux

# Simple script to remove dangling images from GHCR.
# You need to have installed gh cli and jq for this script to work properly
# You need to be logged to 'gh' first
org=$1
container=$2
temp_file="ghcr_prune.ids"
rm -rf $temp_file

echo "Fetching dangling images from GHCR..."
gh api /orgs/${org}/packages/container/${container}/versions --paginate > $temp_file

ids_to_delete=$(cat "$temp_file" | jq -r '.[] | select(.metadata.container.tags==[]) | .id')

if [ "${ids_to_delete}" = "" ]
then
	echo "There are no dangling images to remove for this package"
	exit 0
fi

echo -e "\nDeleting dangling images..."
for id in $ids_to_delete
do
	gh api --method DELETE --silent /orgs/${org}/packages/container/${container}/versions/${id}
	echo Dangling image with ID $id deleted successfully
done

rm -rf $temp_file
echo -e "\nAll the dangling images have been removed successfully"
exit 0