feat(): Add GitHub Actions Workflow to Build and Save Docker Image as Artifact

[legendkartik45]

This pull request introduces a GitHub Actions workflow that builds the project's Docker image and saves it as an artifact for easy reuse across development and testing workflows.

Key Changes:

• Automated Docker Build: The workflow dynamically builds a Docker image tagged with the branch name and short commit hash for better traceability (e.g., main-1a2b3c4).
• Artifact Storage: The built Docker image is saved as a compressed tarball (.tar.gz) and uploaded as a GitHub artifact, enabling developers or CI/CD pipelines to download and reuse the image without rebuilding it.
• Dynamic Tagging: Utilizes GitHub's context variables to incorporate branch names and commit hashes into the image tag, making it easier to associate images with specific code changes.

[legendkartik45]

@ericciarla do let me know your thoughts on this PR and we can also plan to introduce tests and add a test pipeline in future to ensure minimal bugs as the code grows :)