Merge pull request #632 from listx/master

legacy backfill attempt #2

k8s.gcr.io/images/DO-NOT-MODIFY-legacy-backfill/README.md

@@ -0,0 +1,13 @@
+# (Frozen) Legacy Images from gcr.io/google-containers
+
+The images here represent the totality of images in gcr.io/google-containers.
+The google-containers GCR is Google-owned, not community-owned. It is being
+phased out of service from the community as part of the [Vanity Domain
+Flip][VDF].
+
+**As such, these images are effectively FROZEN. New changes to them WILL BE
+REJECTED, and any new promotions MUST happen through individual sub-project
+staging repos, as detailed in the policy [here][official-policy].**
+
+[VDF]: https://github.com/kubernetes/k8s.io/blob/master/k8s.gcr.io/Vanity-Domain-Flip.md
+[official-policy]: https://github.com/kubernetes/k8s.io/tree/master/k8s.gcr.io#creating-staging-repos