how to use docfx where i have my source docfx.json from github or devops repo url?

which way is feasible to use exe or nuget ?

i will pass different repo url every time which will have docfx.json

I tried -

1.docfx.exe but it won't take http url as a input paramter it only run on local VM is not best solution for exe.

2.docker image but not a best approch either

3.nuget but how to use it as a central project where i will pass repo url and generate doc

kindly help me with approach.