More documentation for deploying on Shiny Server

I really appreciate the work that has been done on golem. It is a life-saver for building large packages.

This is a request for more documentation/examples when deploying to Shiny Server with Docker. I have found some documentation using Docker with Shiny Server, but nothing specific to golem. This process is made a bit more complicated due to how golem structures the server.R and ui.R.

There's one Stack Overflow post that I'm using as an example: https://stackoverflow.com/questions/66095119/looking-for-help-launching-a-dockerized-shiny-app-built-with-the-golem-framework