Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/kubernetes/examples/blob/master/OWNERS)~~ [idvoretskyi]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
Hook up guestbook-go (first) to push images to the staging project with prow.