https://bugzilla.redhat.com/show_bug.cgi?id=1037830
--- Comment #5 from John Eckersberg jeckersb@redhat.com --- I think you'll get the 404 at the end if any of the downloads fail. I think this patch upstream fixes that part:
https://github.com/dotcloud/docker/commit/d47507791e14908e78cf38d415a9863c9e...