Add a "--prod" tag suffix to existing ECR images

add-prod-tag-suffix.py

from pprint import pprint
import boto3

repository_name = 'REPLACE_ME'

client = boto3.client('ecr', region_name='eu-west-2')

image_details = (
    image_detail
    for page in client.get_paginator('describe_images').paginate(
        repositoryName=repository_name,
    )
    for image_detail in page['imageDetails']
    if (
        not any('--prod' in tag for tag in image_detail['imageTags'])
        and any('--' not in tag for tag in image_detail['imageTags'])
    )
)

for image_detail in image_details:
    basename_tag = sorted(image_detail['imageTags'], key=lambda tag: len(tag))[0]

    manifest = client.batch_get_image(
        repositoryName=repository_name, imageIds=[{"imageTag": basename_tag}]
    )["images"][0]["imageManifest"]

    new_tag = f"{basename_tag}--prod"

    print("Adding", new_tag, "to", basename_tag)
    try:
        client.put_image(repositoryName=repository_name, imageTag=new_tag, imageManifest=manifest)
    except client.exceptions.ImageAlreadyExistsException:
        # Swallow the exception to support idempotency in the case of
        # duplicated submissions
        pass