Instructions:

0 - Run npm install

1 - Database setup:
Fire up PgAdmin (or your preferred localhost DB tool) // or use the credentials of a hosted database
Create two databases - one for development, one for testing
Create a .env file in the root directory of the backend with the following content

PORT =
SECRET =
DB_USERNAME =
DB_PASSWORD =
HOST =
DB_PORT =
DATABASE =
TEST_DATABASE =

Populate the .env file according to your liking (PORT, SECRET) & with the connection parameters of the databases that you want to connect to

      Create a config file in the config folder (config/config.json) with the following content, and populate it with the same credentials
      Note - referencing the .env file does not work here. This is a dependency of the Sequelize CLI for handling the migrations 
        {
            "development": {
                "username": ,
                "password": ,
                "database": ,
                "host": 
                "port":,
                "dialect": 
            },
            "test": {
                "username": ,
                "password": ,
                "database": ,
                "host": ,
                "port":,
                "dialect": 
            },
            "production": {
                "username": "root",
                "password": null,
                "database": "database_production",
                "host": "127.0.0.1",
          "port": 1234,
                "dialect": "postgres"
            }
        }

2 - Run the migrations (create the DB tables):
npm run db:migrate
npm run db:migrate:test

3 - Run the tests:
npm run test

4 - Fire up the backend:
npm run dev