Adds Dockerfile

[adamdougal]

Also adds the IntelliJ folder to .gitignore.

Required by #25

[nikku]

Thanks for the PR.

So, what is the purpose of this docker file?

• simple try out
• simple run in production
• anything else?

[adamdougal]

We're currently deploying this to our Kubernetes cluster. To be able to do that we have to clone your repo and build it as a Docker image. Having this in the main Wuffle repo saves us and anyone else from having to create our own Docker image.

The next ideal step would be for this to be published to https://hub.docker.com/ as that would then save us from having to clone this repo to get the Docker image.

[nikku]

Thanks for your contribution. A few quick things:

• for building the image and distribution we should use the builder pattern: one image to build the app and another one to copy / install only the production dependencies to
• we must install and build the client, otherwise the resulting app will not be usable. I do not see how your script does that
• It probably makes sense to build and run using alpine images (smaller footprint, download and install)

Do you have any idea how publishing to docker hub works?

[nikku]

Figured out publishing to docker hub.

Pre-built images will be available via nrehwaldt/wuffle:{latest|next}.

Added a docker file that circumvents the problems mentioned above: https://github.com/nikku/wuffle/tree/master/support/docker