Revert "Don't run docker tag automatically"

This reverts commit 554afc3a2a735f6029913d83b01a614aabc93aed.
diff --git a/ubuntu-14.04/template.json b/ubuntu-14.04/template.json
index 29ecd2d..7d58a32 100644
--- a/ubuntu-14.04/template.json
+++ b/ubuntu-14.04/template.json
@@ -79,6 +79,12 @@
       "except": [ "digitalocean", "docker" ]
     },
     {
+      "type": "docker-tag",
+      "repository": "cloudlab/ubuntu",
+      "tag": "14.04",
+      "only": ["docker"]
+    },
+    {
       "type": "docker-save",
       "path": "images/{{ user `distro` }}-docker-{{ timestamp }}.tar",
       "only": ["docker"]