#!/usr/bin/env bash
set -ex
while true; do
    docker image prune -af
    docker pull busybox:latest
    repoDigest=$(docker inspect busybox:latest | jq .[0].RepoDigests[0] | tr -d '"')
    docker tag busybox:latest busybox:a
    docker tag busybox:latest busybox:b
    docker tag busybox:latest busybox:c
    docker rmi busybox:latest
    ctrId=$(docker run -d $repoDigest sleep 100)
    yes | docker image prune -a
    tags=$(docker images --filter=reference='busy*' --format json | jq .Tag | tr -d '"')
    tagsLength=${#tags[@]}
    if [[ $tagsLength -ne 1 ]]; then
        echo "this shouldn't happen! tags length != 1"
        exit 1
    fi
    if [[ $tags != c ]]; then
        exit 1
    fi
    docker kill $ctrId
    docker rm $ctrId
done