Zeit has recently released Serverless Docker Beta which from my understanding it removes the need to have two hosting environments, one for the frontend app and one for WordPress.
I guess he has now switched to google app engine and a staging app is deployed to this URL https://fus-main-site.appspot.com so I think this issue is need to be get closed.
Zeit has recently released Serverless Docker Beta which from my understanding it removes the need to have two hosting environments, one for the frontend app and one for WordPress.
Check out the examples