Run db container first, so that app does not connect to db while db has not started yet
- docker-compose up -d db
- docker-compose up -d app
- CRUD endpoint at /user, and palindrome checker at /palindrome
get(read), delete and update needs userId sent in as header, update, and create need request body as {"firstName": "Vinh", "lastName": "Tran"}
/palindrome userId sent in as header