Create Dockerfiles for both server and client applications

So in order to deploy the server and client, we will need to build them into container images.

When we deploy, we will be deploying two processes - The Server will run as its own application, and then we will also run a server that delivers the client application.

We will need a `client/Dockerfile` and a `server/Dockerfile` that will allow us to build those two images.

For the server you can follow the ionic showcase as an example: https://github.com/aerogear/ionic-showcase/blob/master/server/Dockerfile

For the client you can follow the steps as far as the heading 'Case 2' in this tutorial https://medium.com/greedygame-engineering/so-you-want-to-dockerize-your-react-app-64fbbb74c217