Deploy backend to heroku (using CLI)

Install heroku CLI: brew tap heroku/brew && brew install heroku
Create a node project: npm init
Specify the Node version:
```
"engines": {
  "node": "14.x"
},
```
Specify a start script:
- Create Procfile
- Input into that file: node main.js

Deploy to heroku:

- `git add .`
- `git commit -m "...'`
- `heroku login`
- `heroku create`
- `git push heroku main`

Deploy postgres DB to heroku

Create an app in heroku page
Go to https://dashboard.heroku.com/apps/<app_name>/resources
Add-ons -> Heroku Postgres
Click on Heroku Postgres -> redirect to DB page -> Go to Settings -> Get Credentials
Create a script file .sql
Import SQL code command: heroku pg:psql --app <app_name> < <.sql file name>
Get into postgres server: psql --host=<host_name> --port=<port_num> --username=<username> --password --dbname=<db_name> -> Insert Password
CLI commands:
- \dt: Get all relations (TABLE)
- \d+ <table_name>: Get the table details + constraints of the table

To connect API to PostgresDB:
- Add: PGSSLMODE='no-verify' env variables to your Heroku API app