question about "redhat/rhel7"

Looking at:

https://github.com/projectatomic/docker-image-examples/blob/master/rhel-httpd/Dockerfile

If I try to do "docker pull redhat/rhel7" it doesn't work.
If I try to do "docker pull rhel7" it works.

If I try to build this image (rhel-httpd) on OpenShift, it doesn't work because it can't find "redhat/rhel7".

Is this a bug in the Dockerfile(s)?
