Docker import command for 1.2 reports 'Invalid repository name' error if image name includes a tag.

Issue

• I am trying to import a docker image, with out pulling the image from a repository and incuding a tag it fails with Invalid repository name:
  • Download Image from https://access.redhat.com/search/browse/container-images#?

    # cat /tmp/rhel-server-docker-7.0-23.x86_64.tar.gz | docker import - rhel7:7.0