This PR adds port mapping for the application and database service

Purpose

The purpose of this PR is to fix #86

Goals

This PR adds port mapping for the application and database services in the docker-compose.yml file. It also updates the README.md file with instructions on how to connect to the application and database using the mapped ports.

Approach

I've updated the docker-compose.yml file to include port mappings for the application and database services. I've also updated the README.md file with instructions on how to use these port mappings to connect to the application and database.

Screenshots

N/A

Checklist

[x] This PR doesn't commit any keys, passwords, tokens, usernames, or other secrets.
[x] I have read and understood the development best practices guidelines ( http://bit.ly/sef-best-practices )
[x] My code follows the style guidelines of this project
[x] I have performed a self-review of my own code
[x] I have commented my code, particularly in hard-to-understand areas
[x] I have made corresponding changes to the documentation

Related PRs

N/A

Test environment

This feature was tested on Docker Desktop 4.26.1 and, build on Fedora Linux 39 (KDE Plasma) x86_64

Learning

I've learned more about Docker port mapping and how it allows applications running inside Docker containers to be accessed from the host machine.

sef-global / scholarx-backend