Get tags from Google container registry docker image

extract_gcr_tags.py

from google.auth import load_credentials_from_file
import google.auth.transport.requests
import requests

hostname = "us.gcr.io" # could also be gcr.io
project_name = ""
image_name = ""
service_account_path_file = ""
scope = 'https://www.googleapis.com/auth/cloud-platform.read-only'

cred, project = load_credentials_from_file(
	filename=service_account_path_file,
        scopes=[scope])

request = google.auth.transport.requests.Request()
cred.refresh(request)
headers = {
    "Authorization": f"Bearer {cred.token}"
}

req = requests.get(f"https://{hostname}/v2/{project_name}/{image_name}/tags/list", headers=headers)
print(req.json())