Find the list of Google Container Registry public images
The link to the list of Google Container Registry public images is: https://console.cloud.google.com/gcr/images/google-containers/GLOBAL.
I think there's a different answer to this question now:
You can run:
$ gcloud container images list --project google-containers
NAME
gcr.io/google-containers/addon-resizer
gcr.io/google-containers/aggregator
gcr.io/google-containers/alpine-iptables-amd64
gcr.io/google-containers/alpine-iptables-arm
gcr.io/google-containers/alpine-iptables-arm64
gcr.io/google-containers/alpine-with-bash
gcr.io/google-containers/apparmor-loader
gcr.io/google-containers/busybox
gcr.io/google-containers/cadvisor
...
You can also directly use gsutil to list all the blobs in a public GCR bucket with:
gsutil list gs://artifacts.PROJECT_ID.appspot.com/containers/repositories
tl;dr There is no such thing, at least today.
GCR is first and foremost a private registry. However, we respect the ACL's that users put on the GCS bucket backing their repository. This is how we offer anonymous read to buckets like:
gcr.io/google-containers/...
gcr.io/google-appengine/...
Given a specific project, you can search within it using:
docker search gcr.io/google-containers/<substring>