[Containers] Availability of SLES docker images

[Aleksa Sarai]

> I hadn't heard of Leap before.  I took a look, and that could work.

Yeah, it's fairly a new distribution of openSUSE (and we need to do a 
better job of advertising it IMO).

> To be clear, we are talking about the 42.1 / leap references from
> https://hub.docker.com/_/opensuse/, right?  The Dockerfile says it's
> maintained by Flavio, so I'm guessing that that right one.

Yup. :D

-- 
Aleksa Sarai
Docker Core Specialist
SUSE Australia
https://www.cyphar.com/