how do i mount a full Vue template into my rails app

I'm preparing for a hackaton and my teammate built a Vue app for the frontend.
I've installed rails and vue webpack, and Vue is working well.

But I don't know how to incorporate the Vue frontend made by my teammate because I dont know where to put her files inside the rails application and make it work for me to view it.

This is the repo of the Vue application: https://github.com/anesii/hackathon-project

umm that seems like a separate app. which means you would have to use rails as api and have the vue app call those rails api