FYI I've finished the documentation, examples and also introduction video for the .NET jsreport sdk.
Everything can be found here https://jsreport.net/learn/dotnet
You can use it the same way as the windows binary. Just make sure you have libfontconfig lib on your linux target. In the default docker your can install it using
RUN apt-get update && \
apt-get install -y libfontconfig1
I've now released the preview for .NET core support to nugget. Here you can find some early information. The further information and blog posts announcing it will come. Don't forget to check "include prerelease" in VS.