Regional unavailability

Seems like I can’t pull a docker image manifest, hosted at github packages, from at least one Google Cloud location.

root@gate1:~# docker pull
WARNING: :warning: Failed to pull manifest by the resolved digest. This registry does not
appear to conform to the distribution registry specification; falling back to
pull by tag. This fallback is DEPRECATED, and will be removed in a future
release. Please contact admins of :warning:

this is europe-west1b (Belgium)

While from another location it pulls ok (europe west3c (Frankfurt)).

Problem resolved. It isn’t a regional issue:
The issue was this one:

Github packages docker registry doesn’t support that, move to github container registry.