Document how to setup a repository mirror
Problem
In !9 (merged) and !10 (merged) we added automatic deployment to S3 via CI/CD. See the section "Deployment to AWS S3" in the README.
In order to make it easier for users staying up-to-date with code changes of https://gitlab.com/gitlab-org/status-page they could utilize GitLab's repository mirror feature.
Proposed solution
We could add some documentation to the README mention repository mirroring.
Example project which has repository mirror + CI/CD combined: https://gitlab.com/splattael/status-page-mirror2/