private docker registry のイメージ消すやつ

delete-image.sh

#!/bin/bash

set -e
set -o pipefail

function usage {
    cat <<EOF
Usage:
    $(basename ${0}) [<options>] [registry]

Options:
    -i [name]  image name (required)
    -t [tag]   tag (default: latest)
    -u [user]  basic auth username
    -p [pass]  basic auth password
    -h         show this help
EOF
exit 1
}

image=false
tag=latest
user=false
password=false
schema="https://"

while getopts i:t:u:p:h OPT
do
    case $OPT in
        i)  image=$OPTARG;;
        t)  tag=$OPTARG;;
        u)  user=$OPTARG;;
        p)  password=$OPTARG;;
        h)  usage;;
        :|\?) usage;;
    esac
done
shift $((OPTIND - 1))

if ! [ $image ]
then
    echo 'image name is required.'
    exit 1
fi

if ! [ $1 ]
then
    echo 'registry is required.'
    exit 1
fi

if [ $user ] && [ $password ]
then
    registry="${schema}${user}:${password}@${1}"
else
    registry="${schema}${1}"
fi

digest=$(
    curl -sSL -I \
        -H "Accept: application/vnd.docker.distribution.manifest.v2+json" \
        "$registry/v2/$image/manifests/$tag" \
    | awk '$1 == "Docker-Content-Digest:" { print $2 }' \
    | tr -d $'\r'
)

curl -sSL -X DELETE "$registry/v2/$image/manifests/$digest"