Make this a combined Express and React deployment

[bmann]

By default, just the basic react app start script will bind to localhost. You can pass in a HOST variable in calling it of 0.0.0.0

Because of how Chromebook's have Ubuntu containers setup, I had a similar thing :) Need to look at port settings a bit deeper.

BUT -- the actual outcome here should be to move this to running Express, then we can build the other server endpoints I have in mind with Express, all in the same app.

Here's an article about that https://originmaster.com/running-create-react-app-and-express-crae-on-heroku-c39a39fe7851

[bmann]

OK, had to do HOST=0.0.0.0 as part of the start script so it can bind to the correct port on Heroku.

This is not ideal at all, we should run this with Express, changing this issue to reflect that that should be the outcome of this :)

[bmann]

Other part that needs to be done is have secrets as Heroku vars and expose them to React. Will also have some “non secret” vars to have as examples — although that would pretty much only be available locally.