GitHub Actions Advanced Skill

Expert guidance for designing, writing, debugging, and securing production-grade GitHub Actions workflows.

Detailed Guide

Read the detailed guide before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely.

When to Use This Skill

• User mentions GitHub Actions, .github/workflows, CI/CD pipelines, runners, jobs, steps, or actions
• User wants to automate builds, tests, deployments, or releases via GitHub
• User asks about matrix builds, reusable workflows, composite actions, or self-hosted runners
• User needs help with OIDC authentication, caching strategies, or secrets management
• User says "my GitHub pipeline is failing" or "set up CI for my repo"
• User asks about workflow security, hardening, or environment protection rules