A little script to prune old Docker images from the Google Container Registry.
The script requires Python 3.9. You can run it with ./prune-gcr --project <project> <repository>. If --project is not specified, it will attempt to infer the default project from your gcloud configuration.
usage: prune-gcr [-h] [--project PROJECT] [--older-than CUTOFF]
[--keep-at-least N]
repository
Prune old Docker images from the Google Container Registry. Example usage:
prune-gcr www
positional arguments:
repository short name of the GCR image repository (as in:
gcr.io/<project>/<repository>)
optional arguments:
-h, --help show this help message and exit
--project PROJECT name of the Google Cloud project. Defaults to
the project in your gcloud configuration.
--older-than CUTOFF prune images older than CUTOFF. Must be formatted as
YYYY-MM-DD. Uses GCP's time zone. Defaults to 90 days
ago.
--keep-at-least N keep at least N images, even if they are older than the
cutoff date. Defaults to 50.