Describe how to set up a push mirror repository at GitLab
Describe how to set up a push mirror repository at GitLab

As requested in issue https://gitlab.com/gitlab-org/gitlab-ce/issues/57062
describe how to set up a push mirror repository at GitLab.

Signed-off-by: Juergen Kosel <485db88547e40fa53b3973a41f07f191285930b9@gmx.de>

stoplightio/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,iiet/iiet-git,stoplightio/gitlabhq,iiet/iiet-git,iiet/iiet-git,mmkassem/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq