skopeo: copy list of images to private registry

skopeo-copy.sh

#!/bin/bash
# copy image names to docker-images.txt:
# docker image ls --format '{{.Repository}}:{{.Tag}}' > docker-images.txt

TLS_VERIFY=false
REGISTRY=localhost:5000
IMAGES_FILE="${1:-docker-images.txt}"

command -v skopeo &>/dev/null || { echo "skopeo is missing!"; exit 1; }

grep -v '^#\|^$' $IMAGES_FILE | while read -r URL; do
  IMAGE=$(echo "$URL" | sed -E 's/^([a-z.A-Z0-9-]+)\/(.+)/\2/')
  skopeo copy --dest-tls-verify=$TLS_VERIFY \
    docker://$URL \
    docker://$REGISTRY/$IMAGE
done