Add a dockerfile for better and easy setup

[Mr-Sunglasses]

The Dockerfile will define the necessary dependencies, configurations, and runtime environment for our backend project. With Docker, developers can easily spin up containers that encapsulate the entire project stack, including the required libraries, frameworks, and services. This approach eliminates the need for manual setup steps and minimizes the likelihood of configuration discrepancies or compatibility issues.

[tanmay-devv]

can i work on this?
i see no one working on it right now, i'll start working on this