add docker and environment flag parsing

[jetersen]

No description provided.

[rgl]

Are you also creating a modified gitlab container to point to this service?

How about certificate validation?

I have mix feelings about using an environment variable with the same name has the argument. It should have some prefix. Also, why can't you pass the command line arguments instead of using environment variables?

Why not use make to build the binary?

Do we really need the Ubuntu base image to run a go application?

[jetersen]

We use a separate nginx as our reverse proxy to handle all traffic to both this service and Gitlab.

# RUN apk --no-cache add ca-certificates is there to demonstrate you will need to load a certificate if have your own root ca or perhaps a untrusted chain I can perhaps make a the full example 😅

Using make seems unnecessary

Ubuntu was because I was unclear what dependency it needed and alpine base image was not good enough