Config.yml where are the notes

I assume I must be missing something really obvious, but I cannot find any notes / documentation on how to edit config.yml.

After installation I get this message :slight_smile:

If you need to make additional configuration changes, you can modify the settings in ./bwdata/config.yml

However the file is blank and I cannot find any notes on what options are available.

I need to use my own certificate and DNS servers in the nginx config and assume this is the way to do that.

Never used docker before as I prefer real apps on the OS, so any help would be appreciated,