Tried below but cannot get sle12-docker-image. is something wrong on respos?

Running on SLES 12 with a trial registration

-----------------------
10:~ # zypper install sle12-docker-image
Refreshing service 'SUSE_Linux_Enterprise_Server_12_x86_64'.
Loading repository data...
Reading installed packages...
'sle12-docker-image' not found in package names. Trying capabilities.
No provider of 'sle12-docker-image' found.
Resolving package dependencies...

Nothing to do.

------------------------- current respos
10:~ # zypper lr
# | Alias | Name | Enabled | GPG Check | Refresh
--+-----------------------------------------------------------------+--------------------------+---------+-----------+--------
1 | SLES12-12-0 | SLES12-12-0 | Yes | ( p) Yes | No
2 | SUSE_Linux_Enterprise_Server_12_x86_64:SLES12-Debuginfo-Pool | SLES12-Debuginfo-Pool | No | ---- | No
3 | SUSE_Linux_Enterprise_Server_12_x86_64:SLES12-Debuginfo-Updates | SLES12-Debuginfo-Updates | No | ---- | Yes
4 | SUSE_Linux_Enterprise_Server_12_x86_64:SLES12-Pool | SLES12-Pool | Yes | ( p) Yes | No
5 | SUSE_Linux_Enterprise_Server_12_x86_64:SLES12-Updates | SLES12-Updates | Yes | (r ) Yes | Yes