# github-actions

Build production-grade GitHub Actions CI/CD pipelines — from first workflow to reusable workflows, matrix builds, and deployment gates.

Eliminate duplicated CI/CD logic across repositories using GitHub Actions reusable workflows and composite actions with real-world examples.

Harden GitHub Actions security with least-privilege permissions, OIDC federation, SHA-pinned actions, and secrets management best practices.

Master GitHub Actions matrix builds to test across multiple OS versions, language versions, and configurations in parallel.