Get the most recent semver tag for an ECR repo

last_semver.py

import pprint
import boto3
import sys
repo_name = sys.argv[1]
print(repo_name)
client = boto3.client('ecr')
response = client.list_images(
    repositoryName=repo_name,
    filter={
        'tagStatus': 'TAGGED'
    }
)

images = response['imageIds']
def splitter(image):
    tag = image['imageTag']
    try:
        return tuple(map(int, tag.split('.')))
    except:
        return (0,0,0)
sorted = images.sort(key=splitter,reverse=True )
print(images[0]['imageTag'])

Use this to know which tag of an image to deploy