Docker Image + Environment Variable configuration.

[matthewhartstonge]

Currently Gaurun does not have a way to deploy via Docker.
We run Kubernetes and as such all deployments are container driven.

It would be nice to have a docker image to ease adoption, upgrades and developer experience.

For example, we code on windows, but deploy on Linux (using containers).
Currently there is no windows binary to run.

Whereas it would be great to simply run:

docker run -d mercari/gaurun:v0.10.0 \
  -p 1056:1056 \
  -v conf:/conf

Which works across all platforms!

I am able to help with creating a minimalist Dockerfile with configuration via Environment Variables. (As I need to do it anyway for our internal deployment)