Issue #SBCOSS-00: Create Github actions to publish docker image to GHCR

[chethann007]

This PR adds a GitHub Actions workflow to the certificate-registry repository.

Build and Deploy (build.yml):
Triggers when a Git tag is pushed.
Builds the project, packages the artifact, builds a Docker image, and pushes it to GitHub Container Registry (GHCR).

Description by Korbit AI

What change is being made?

Add a GitHub Actions workflow to automate the build and deployment of a Docker image to the GitHub Container Registry (GHCR) upon tagging any commit.

Why are these changes being made?

Automating the build and deployment process ensures consistency, reduces manual errors, and saves developer time by automatically publishing Docker images to GHCR when a tag is pushed. This approach leverages GitHub's native CI/CD capabilities and integrates well with existing workflows.

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[korbit-ai]

I've completed my review and didn't find any issues... but I did find this frog.

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[Copilot]

Pull Request Overview

This PR introduces automated CI/CD capabilities by adding a GitHub Actions workflow that builds and deploys Docker images to GitHub Container Registry (GHCR) when tags are pushed.

• Automates Docker image building and publishing to GHCR on tag pushes
• Implements Java/Maven build pipeline with caching and artifact management
• Establishes proper image tagging strategy using repository name, tag, commit SHA, and run number

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