Node-express server in github page

Hi all, is it possible to deploy a node-express server with reactjs app in github page or at least to deploy it in heroku and then use the domain github.io? I read that with jekyll or with an ylm file it is possible but I am not sue if that is possible only for react projects or it can works with a MERN proyect for example, there is not clear documentation about it :frowning: . Please someone answer me!