serilog-settings-configuration | A Serilog configuration provider | Configuration Management library

The Serilog configuration extension doesn't create instances of the sinks directly. All it does is to try to call a method .WriteTo.NameOfTheSinkYouDefinedInTheConfig(), if that exists - so for that to work, you need to provide this method yourself.

If you look at the source code of any of the official sinks, you'll notice that they are always declared as internal classes rather than public classes, and the way to hook sinks into the Serilog configuration is by creating an extension method to the LoggerSinkConfiguration class where you instantiate the sink yourself and add it to the pipeline.

In your case, it would be something like this:

What you can do is the following:

1. Create two appsettings files one should be the default and the second one appsettings.Linux.json

2. Read the appsettings file depending on which OS the application is running.