dockerized application

[Namanbanshiwala]

This PR introduces Docker support for the application, enabling containerized deployment for better consistency and scalability.

Key Changes:

Added Dockerfile with multi-stage build for optimized image size

Included .dockerignore to exclude unnecessary files

Updated README.md with Docker setup and usage instructions

Benefits:

Consistent environments across development/staging/production

Simplified dependency management

issue #902

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Enter your participant role here-
SSOC S4

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Checklist:

Author Self-Review:

• ✅ I have performed a self-review of my own code.
• ✅ I understand the changes I'm proposing and why they are needed.
• ✅ My changes generate no new warnings or errors (linting, console).
• ✅ I have made corresponding changes to the documentation (if applicable).

[vercel]

Someone is attempting to deploy a commit to the vanshchauhan21's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

Thank you for submitting your pull request! 🙌 We'll review it as soon as possible. In the meantime, If there are any specific instructions or feedback regarding your PR, we'll provide them here. Thanks again for your contribution! 😊

[Bhavishya2601]

Pls resolve conflicts

[Namanbanshiwala]

Now I update Feedbacksection.css, and you check it also