Docker compose setup

[don-tay]

Setup docker compose with

1. Backend
2. PostgreSQL
3. Nginx
4. Certbot

To find out:

1. How to get FE to be served by Nginx, given config that nginx serves both FE and BE separately.
2. CI/CD pipeline for dockerized setup

References:
https://www.digitalocean.com/community/tutorials/how-to-secure-a-containerized-node-js-application-with-nginx-let-s-encrypt-and-docker-compose