Mirror container images from public image repo to ECR

push-image-to-ecr.sh

#!/usr/bin/env bash

profile="$AWS_PROFILE"
region="$AWS_REGION"
public_image="$1"

usage(){
  echo "Usage: AWS_PROFILE=blah AWS_REGION=blah $0 [public_image_repo/image_name:tag]"
  echo "Example: AWS_PROFILE=hello AWS_REGION=eu-west-2 ./push-image-to-ecr.sh redis/redis-stack:v2.2.0"
  echo "The original dockerhub image will then be available at AWS_ACCOUNT_ID.dkr.ecr.eu-west-2.amazonaws.com/redis/redis-stack:v2.2.0"
  exit 3
}

get_account_id(){

    account_id=$(aws sts get-caller-identity --query Account --output text --profile $profile --region $region)
    if [ $? -ne 0 ]; then
        echo "Error: Unable to get AWS account ID"
        exit 1
    fi
    echo "$account_id"
    return $account_id
}

main(){
    if [ -z "$profile" ] || [ -z "$region" ] || [ -z $public_image ]; then
        usage
    fi
    
    account_id=$(get_account_id)
    docker pull $public_image
    aws ecr get-login-password --region $region | docker login --username AWS --password-stdin ${account_id}.dkr.ecr.${region}.amazonaws.com
    docker tag $public_image ${account_id}.dkr.ecr.${region}.amazonaws.com/${public_image}
    echo docker push ${account_id}.dkr.ecr.${region}.amazonaws.com/${public_image}
}

main