Dockerize me

[chris-wood]

Add a docker configuration file to make deployment of the server simpler.

[mschirrmeister]

I have a Dockerfile in my repo. https://github.com/mschirrmeister/odoh-server-go-docker/blob/main/Dockerfile
I created it for a little ODoH POC I am running.

Depending on your requirements we can use one like this? I tried to keep it very simple for the moment. It checks out a specific commit and not tag or release.
The readme in the repo has a few docker run examples. Either to use it with a certificate directly or run it behind a proxy. My examples are Traefik related.