ERROR: Preparation failed: Error: No such image:

Gitlab v 12.2.4, Omnibus

I have uploaded an image to the internal docker registry (it’s visible in the UI), but when I try to use it by specifying it in gitlab-ci.yml I get

Authenticating with credentials from $DOCKER_AUTH_CONFIG
Pulling docker image <...>
ERROR: Preparation failed: Error: No such image: <..>

In the UI, and builds fail. It looks like the auth config I put in the gitlab runner config is working from the output. I’m sure the path is correct.

The logs/registry/current logfile shows:

err.message="blob unknown to registry"

Don’t know what else to try.