#!/bin/bash
set -e

usage() {
cat &2
                exit
            fi
            SOURCE_IMAGE_TAG_OVERRIDE=$2
            shift # skip the flag value
            ;;
        -?*)
            usage
            printf 'ERROR: Unknown option: %s\n' "$1" >&2
            exit
            ;;
        *)            
            break
    esac

    shift
done

LABEL=${1:-testing}

if [[ -n "$SOURCE_IMAGE_TAG_OVERRIDE" ]]; then
    SOURCE_IMAGE_TAG="$SOURCE_IMAGE_TAG_OVERRIDE"
fi

readonly SOURCE_IMAGE_TAG
readonly TARGET_IMAGE
readonly LABEL

set -x
docker tag "${SOURCE_IMAGE_TAG}" "${TARGET_IMAGE}:${LABEL}"
gcloud docker -- push "${TARGET_IMAGE}:${LABEL}"