How to Build a Branch-Based CI/CD Pipeline with SonarQube and GitHub Actions

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A reusable CI/CD pattern has been documented for automatically deploying code to different environments based on branch names using GitHub Actions. The setup integrates a SonarQube quality gate that must pass before any deployment proceeds, mapping develop, staging, and main branches to their respective environments. A key technical insight addresses why the common workflow_run trigger silently fails — it only reads trigger definitions from the repository's default branch, making it unreliable for multi-branch setups. The guide recommends using GitHub's reusable workflow_call primitive instead, which resolves the workflow file from the caller's own branch reference. Production deployments additionally require manual human approval, configured through GitHub's Environments feature under repository settings.

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