check_image_tag

check_image_tag.sh

#!/bin/bash

# NOTE: other solution can maybe ...
# gcloud container images list-tags eu.gcr.io/project_id/image_name

image=$1
if [[ ! $image =~ ^[eu\.]*gcr\.io\/.+\/.+:.+$ ]]; then
    echo "[ERROR] bad parameter, expect something like 'eu.gcr.io/project/image:version'"
    exit 255
fi

# docker manifest inspect is only supported on a Docker cli with experimental cli features enabled
export DOCKER_CLI_EXPERIMENTAL="enabled"
docker manifest inspect $image > /dev/null 2>&1

RESULT=$?
if [ $RESULT -eq 0 ]; then
    echo "[ERROR] Image tag already exist ... 😞"
    exit 255
else
    echo "[INFO] Image tag doesn't exist go ahead ... 😚"
    exit 0
fi