This is my first API using Express and Node.js

You will need a MongoDB. When you have one just set the environment variables like so:

1. Create .env file
2. Set DB_CONNECTION=[MONGODB_URL]
3. Set PORT=[DESIRED_PORT]

Install and run the server locally on localhost:[DESIRED_PORT]

1. Run command $ npm install
2. Run command $ npm run dev

You can find the API Documentation at [SERVER-DOMAIN]/api-docs