migrate script to push docker hub images to Github Packages

migrate_dockerhub.sh

#!/bin/bash
set -ex
# Simple script to repush docker images from one repository to another
# This is done incremently because my images are massive
original_image="kamailio/kamailio-ci"
# github packages has a strange way of having images, you can have
new_image="kamailio/kamailio-ci"
# Github package registry with a repository
target_acr="ghcr.io"
temp_file="image_list.txt"
rm -f $temp_file

wget -q https://registry.hub.docker.com/v2/repositories/$original_image/tags -O tmp.json
jq -r '.results | .[] | .name' tmp.json >> $temp_file
next_url=$(jq -r '.next' tmp.json)
while [[ -n ${next_url} ]] && [[ ${next_url} != null ]]; do
  wget -q "${next_url}" -O tmp.json
  jq -r '.results | .[] | .name' tmp.json >> $temp_file
  next_url=$(jq -r '.next' tmp.json)
done

while read -r line; do
    tag="$line"
    if [[ "$line" == "latest" ]]; then
      echo "Found line latest"
    else
      # docker image push and delete
      docker pull $original_image:$tag
      docker tag $original_image:$tag $target_acr/$new_image:$tag
      docker push $target_acr/$new_image:$tag
      docker image rm $original_image:$tag
      docker image rm $target_acr/$new_image:$tag
    fi
done < "$temp_file"