feat: container release pipeline

[krakenhavoc]

This pull request introduces a new GitHub Actions workflow for building, testing, publishing, and deploying the Docker image for the project. The workflow automates CI/CD steps including linting, testing, multi-platform Docker image builds, and deployment triggers.

CI/CD Workflow Automation:

• Added .github/workflows/docker-publish.yaml to define a multi-stage workflow that:
  • Runs linting and tests on all pushes and pull requests to main affecting Go source files, dependencies, the Dockerfile, or the workflow itself.
  • Builds and pushes a multi-architecture Docker image to GitHub Container Registry, tagging images by commit SHA, dev, and latest (if on the default branch).
  • Triggers downstream deployment workflows in the KrakenKey/infra-int repository for dev and prd environments after successful image publishing.