This is a bare bone example of running Wagtail on Google App Engine Standard Environment. Since Wagtail is Django-based CMS, it is runs almost out of the box on GAE with a few minor tweaks. The basis of this is Running Django on App Engine standard environment tutorial.
In addition to the bare bone example, there's another nice library called Djangae which provides many helpful features notably storage backend for the blog images, authentication, Datastore backend and others.
##Setup on Ubuntu 14.0.4 LTS Follow Django on GAE tutorial to setup Cloud SQL and proxy.
Clone the repo.
Configure database settings in env.yaml
gcloud app deploy