find-ecr-image.sh

#!/usr/bin/env bash
# ./find-ecr-image.sh 1234567890.dkr.ecr.eu-west-1.amazonaws.com/supersecret:tag

REGISTRY_ID="${1%%.*}"
IMAGE_TAG=${1##*:}
REPOSITORY="$(echo ${1%%:*} | cut -d / -f 2,3)"

if [[ -z "$REGISTRY_ID" ]] || [[ -z "$IMAGE_TAG" ]] || [[ -z "$REPOSITORY" ]] ; then
    echo "Usage: $( basename $0 ) url:tag"
    echo "Example: $( basename $0 NNNNNNNNN.dkr.ecr.eu-west-1.amazonaws.com/something:master) "
    exit 1
fi

IMAGE_META="$( aws ecr describe-images --registry-id $REGISTRY_ID --repository-name=$REPOSITORY --image-ids=imageTag=$IMAGE_TAG 2> /dev/null )"

if [[ $? == 0 ]]; then
    IMAGE_TAGS="$( echo ${IMAGE_META} | jq '.imageDetails[0].imageTags[0]' -r )"
    if [[ "$(echo $IMAGE_TAGS)" == "$(echo $IMAGE_TAG)" ]];then
      echo "$1 found"
    else
      echo "$IMAGE_TAG not found or the JSON response changed"
      exit 2
    fi
else
    echo "$1 not found"
    exit 1
fi