GitHub Actions

GitHub Actions automates software workflows with event-driven CI/CD pipelines. Workflows are YAML files in .github/workflows/ that define jobs, steps, and actions triggered by repository events.

Action types:

• Workflow files: CI/CD pipelines using existing actions (.github/workflows/*.yml)
• Custom JavaScript actions: Fast, cross-platform, use @actions/toolkit
• Custom Docker actions: Full environment control, Linux only, slower startup
• Composite actions: Combine multiple steps into reusable units

Quick Start