Set up development environment

[koechkevin]

This PR sets up development environment for Academy Afirca.

Steps

1. Set environment variables on a .env file as per .env.example.
2. Start docker container by running docker-compose up --build.
3. Access application on http://localhost:8080

[koechkevin]

@kilemensi check this PR, It also ensures dev environment is updated on every PR merge to main.