To push an image to this image stream:
$ sudo docker tag myimage {{imagestream.status.publicDockerImageRepository}}/{{ imagestream.metadata.namespace }}/{{ imagestream.metadata.name}}:tag
$ sudo docker push {{settings.registry.host}}/{{ imagestream.metadata.namespace }}/{{ imagestream.metadata.name}}:tag
$ sudo docker tag myimage {{settings.registry.host}}/{{ imagestream.metadata.namespace }}/{{ imagestream.metadata.name}}:tag
$ sudo docker push {{settings.registry.host}}/{{ imagestream.metadata.namespace }}/{{ imagestream.metadata.name}}:tag
$ sudo docker tag myimage registry/{{ imagestream.metadata.namespace }}/{{ imagestream.metadata.name}}:tag
$ sudo docker push registry/{{ imagestream.metadata.namespace }}/{{ imagestream.metadata.name}}:tag