feat: add Docker support and setup documentation

[sodium16]

Description

Please include a summary of the change, the motivation behind it, and which issue it addresses.

Closes #5

Type of Change

Please delete options that are not relevant and check the ones that apply:

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📖 Documentation update

Checklist

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings or console errors.
• I have tested my changes locally and verified they work as expected.
• Any dependent changes have been merged and published in downstream modules.

Screenshots / Screen Recordings (if applicable)

Testing Summary

Tested

• Built backend and frontend Docker images
• Started all services with Docker Compose
• Verified MongoDB connectivity
• Verified frontend accessible at http://localhost:5173
• Verified backend accessible at http://localhost:5000
• Executed seed.js successfully inside the backend container

Expected Result

All services should start successfully and communicate correctly within the Docker network.

Actual Result

All services started successfully. The frontend, backend, and MongoDB communicated correctly, and the seed script executed without issues.

[udaycodespace]

@sodium16 Great work!
I verified the screenshots and testing evidence. Before I approve, please address these minor issues:

1. Fix the typo in frontend/.dockerignore (gitignore → .gitignore).
2. Remove the obsolete version field from docker-compose.yml since Docker Compose V2 ignores it and emits a warning.

Once these are updated, I'll approve and merge.

[sodium16]

@udaycodespace sorry for the errors. I have fixed the issues and amended my previous commit

[udaycodespace]

@udaycodespace sorry for the errors. I have fixed the issues and amended my previous commit

LGTM!