Github Ci

GitHub CI

Write and maintain GitHub Actions CI workflows with confidence. This skill covers workflow design, runner configuration, testing patterns, and security best practices for continuous integration pipelines on GitHub.

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Intent Router

Load reference files for depth on specific topics:

| Topic | File | Load when... | | --- | --- | --- | | Workflow Basics | resources/workflow-basics.md | Learning workflow YAML structure, triggers, jobs, and built-in actions | | Runners & Caching | resources/runners-and-caching.md | Configuring runners, setting up caching, or optimizing build performance | | Testing Patterns | resources/testing-patterns.md | Implementing test runs, reporting results, or integrating coverage tools | | Security & Secrets | resources/security-and-secrets.md | Managing secrets, permissions, and third-party action safety |

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Quick Start

Basic GitHub Actions Workflow

1. Create workflow file — Save as .github/workflows/ci.yml in repository root
2. Define triggers — Use on: to specify when workflow runs (push, pull_request, schedule)
3. Configure job — Define jobs with name, runner type, and steps
4. Add checkout — Use actions/checkout@v4 to access repository code
5. Run commands — Add steps with run: or use community actions

Minimal Workflow

name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: echo "Running CI pipeline"

Workflow Anatomy

workflow
├── name: Display name
├── on: Trigger events (push, pull_request, schedule, workflow_dispatch)
├── env: Workflow-level environment variables
└── jobs:
    └── :
        ├── runs-on: Runner type (ubuntu-latest, windows-latest, macos-latest)
        ├── env: Job-level environment variables
        ├── strategy: Matrix, fail-fast, max-parallel settings
        └── steps:
            ├── uses: Pre-built action
            └── run: Shell command or script

File Location

All workflows must be in .github/workflows/ directory with .yml or .yaml extension. Use kebab-case for filenames: build-and-test.yml, deploy-production.yml.

Quick Validation

Validate YAML syntax before pushing:

docker run --rm -v "$(pwd):/data" pipelinecomponents/yamllint yamllint /data/.github/workflows/

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: greedychipmunk
• Source: greedychipmunk/agent-skills
• License: MIT

Install and usage instructions live in the source repository linked above.