Adding tags to an Amazon ECR repository resource. If the tag from the list does not exist, it will be added to the tag set. If the tag has a different value, it will be changed in the repository tag set.

add_tags_to_repository_resource.py

import boto3

TAGS_TO_ADD = [
    {
        "Key": "team",
        "Value": "DevOps"
    },
]

client = boto3.client("ecr")

paginator = client.get_paginator('describe_repositories')
for page in paginator.paginate():
    repositories = page["repositories"]
    for repository in repositories:
        client.tag_resource(resourceArn=repository["repositoryArn"], tags=TAGS_TO_ADD)
    print(f"Finished update {len(repositories)} repositories")