Add Docker support

[fpindej]

Problem

The app has to be hosted somewhere. Easiest naive approach is to:

• using dotnet publish -c Release + more arguments to build the application
• running it as a service either on a server (with internet connection access) or Your local computer

This is fine, but containerizing the application should enable more versatility and simplicity in the deployment process

Solution suggestion

• create a Dockerfile (or docker compose or whatever to make it work)
• support multiple environment builds (build image for Production, Development...)
• building app into a docker image
• run the container from the image
• [OPTIONAL] add the configurations either to launchsettings.json (or let me know if there's another better way)