Add a bind mount and reload flag for hot reloading

[BalaSubramaniam12007]

This PR fixes #1771 by enabling hot reloading inside Docker containers, allowing code changes to be reflected without requiring a full rebuild.

Changes Introduced:

1. Added a bind mount in docker-compose.yml to sync local code with the container.
2. Updated Gunicorn command to include the--reloadflag, ensuring automatic reloading of the application.
3. Tested the solution, confirming that code changes are reflected in real-time without requiring a docker compose up --build.

How to Test the Fix:

1. Start the updated Docker container.
2. Modify UI elements.
3. Refresh the browser and verify that the changes are applied instantly.
4. Check logs to ensure the application reloads automatically:
   docker compose logs -f vulnerablecode

[BalaSubramaniam12007]

@pombredanne I have added the hot reloading in docker container for easy development process, please review it and let me know if any further changes are required.

[keshav-space]

@BalaSubramaniam12007 thanks for your interest. docker-compose.yml is meant for production and the change you introduced in this PR are not desirable for production. We should instead use docker-compose.dev.yml. Let’s flesh this out in #1771.