This application runs on Rails 5.2.4.1 and PostgreSQL. Add the following to your Gemfile.
gem 'rails', '~> 5.2.4', '>= 5.2.4.1'
gem 'pg'
Install missing gems if necessary.
bundle install
Run migrations to create the model in the database.
rails db:migrate
When running on AWS, set the environment variables on production for your RDS instead of a password directly on the file (references database.yml):
production:
adapter: postgresql
encoding: unicode
database: <%= ENV['RDS_DB_NAME'] %>
username: <%= ENV['RDS_USERNAME'] %>
password: <%= ENV['RDS_PASSWORD'] %>
host: <%= ENV['RDS_HOSTNAME'] %>
port: <%= ENV['RDS_PORT'] %>
Then start the rails server.
rails s