Show rendered page when PR

It should be nice if we can have a rendered page when PR is pushed. 
So that, reviewer can confirm the rendered result before approving the PR in the case that the pusher forget to do so (like me).

I was experienced that it is possible from kwok project before. It has a rendered page per PR.
https://deploy-preview-316--k8s-kwok.netlify.app/docs/adopters/