cd into your workspace folder.
Set RVM to use the appropriate Ruby version and gemset:
rvm use 3.1.2@rails-7-app
Create a new Rails app:
rails new git-demo-app
Note that this command has run git init on the new project.
Initialize and run the app:
cd git-demo-app
bundle install
rails db:migrate:reset
rails s
Open http://localhost:3000 to confirm the app is working.
Press Ctrl-C to halt the server.