* feat(ci): delete unused artifacts in registries
Previous behavior:
Docker artifacts are costing us a good part of our infrastructure budget,
and we needed a way to remove unused artifacts.
Expected behavior:
Delete unused (not just old) docker artifacts in GAR (Google Artifact Registry),
preferably using a generic solution is this needs to be expanded into other
Docker registries.
Solution:
Implement GCR Cleaner https://github.com/GoogleCloudPlatform/gcr-cleaner,
as this tools provided integration with `docker/login-action` to interact
with multiple Docker v2 registries.
* fix(action): use hours instead of days
* chore: add TODO
* Update .github/workflows/delete-gcp-resources.yml
Co-authored-by: teor <teor@riseup.net>
* fix: allow the action to fail if some images can't be deleted
Co-authored-by: teor <teor@riseup.net>
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