Creating Mnesia Schema on Heroku Node

Hello guys, I have deployed a Phoenix app successfully to Heroku. My issue is that I’ve been having trouble on creating a Mnesia Schema that works, I mean, schemas rely on the node name, right? But so far from what I have read from the Phoenix documentation, I’m able to run mix tasks (currently using amnesia dependency) for creating schemas, but I think that the node I’m creating the schema for is incorrect, (nonode@nohost) is not how I configured my web app, and I’m getting errors on my app due to the lack of a proper Mnesia schema on disk which is what I need.

This is my Procfile, in case it is needed:

web: MIX_ENV=prod elixir --sname better-big-canvas -S mix phx.server

Thanks in advance.