Thanks for the explanation. I think it makes sense.
Using the shorter syntax did resolve the problem.
On 06/06/2017 13:25, Clayton Coleman
Tag tries to guess at whether you mean an image stream ref or
a regular image ref. In your case, it saw the SRC arg as
172.30.1.1 (registry) development (namespace) and (name)
ruby22-centos7 and assumed you meant a docker image (which that
is). However, it then tries to import the image and fails
because the registry internally is not running over https by
If you use tag with a short name
It assumes you mean an image stream and should do what you
want. You can use the --source=X flag to exactly specify which
source to use. You can also use --insecure which would allow
the import attempt to succeed, but whenever you're promoting
images doing so with a direct image stream tag is much faster.
In retrospect this has confused many people, but we can't
change it without breaking backwards compatibility.