github-actions-expert
Expert guide for GitHub Actions CI/CD workflows, reusable workflows, composite actions, matrix builds, OIDC cloud auth, security hardening, and artifact automation / Panduan ahli GitHub Actions CI/CD
SKILL.mdskills/github-actions-expert/SKILL.md
GitHubGitHub Actions Expert (Enterprise CI/CD Standard 2026)
<a name="english"></a>
English
Orchestration & Integration
- Upstream & Lifecycle:
zero-to-prod-orchestrator(Phase 7 deployment),brainstorming,session-memory-manager. - Infrastructure & Cloud Targets:
ci-cd-devops-architect(pipeline topology),docker-container-expert(container builds & SBOM),cloud-hosting-expert(edge & cloud deploys). - Security & Secret Vaults:
zero-trust-secret-vault(OIDC federated auth),anti-slop(pipeline hygiene & strict gate validation). - Test Automation & Quality:
autonomous-tdd-debugger(test runner execution),e2e-testing-expert(Playwright suites),production-ready-hardener(pre-flight checks).
Description
Enterprise-grade guide for engineering hardened, high-performance Continuous Integration & Continuous Delivery (CI/CD) pipelines on GitHub Actions. Covers deterministic dependency caching (pnpm/bun/uv/cargo), reusable workflows (workflow_call), composite actions (using: 'composite'), dynamic multi-platform matrix builds, OpenID Connect (OIDC) cloud federation for AWS/GCP/Azure with zero long-lived credentials, immutable action pinning by commit SHA, fine-grained GITHUB_TOKEN permissions, concurrency control, artifact attestation, and npm/OCI provenance publishing.
Trigger Conditions
- Designing, scaffolding, or modernizing
.github/workflows/pipelines. - Implementing automated PR verification: linting, type-checking, unit tests, and E2E gates.
- Setting up reusable workflows (
workflow_call) or modular composite actions. - Hardening CI/CD security: replacing long-lived tokens with OIDC federation.
- Pinning third-party GitHub Actions to immutable full commit SHAs.
- Configuring concurrency groups with
cancel-in-progress: trueto prevent queue bloat. - Generating build provenance and software bills of materials (SBOM).
- Automating multi-platform release builds, semantic versioning, and package publishing.
What's New in 2026 (Modern GitHub Actions Standard)
1. Security & Governance First
- Zero Static Credentials: All cloud deployments must use OpenID Connect (OIDC) federated role assumption via
permissions: id-token: write. - Full SHA Action Pinning: Never use
@v4or@maintags in production workflows. Pin exact 40-character commit SHAs with inline human-readable comments (e.g.actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2). - Least-Privilege Token Permissions: Workflows must declare top-level
permissions: {}(deny all) and elevate only specific job scopes (contents: read,pull-requests: write, etc.). - Software Supply Chain Provenance: Automated SLSA Level 3 attestations using
actions/attest-build-provenance.
2. Speed & Determinism
- Native Dependency Caching: Utilize native package manager caching via setup actions (
setup-nodewithcache: 'pnpm',setup-pythonwithcache: 'uv'). - Concurrency Cancellation: Cancel redundant runs on rapid git pushes via
concurrency: group: ${{ github.workflow }}-${{ github.ref }}, cancel-in-progress: true. - Fast-Fail Matrix Strategy: Optimize CI compute cycles with
strategy: fail-fast: trueduring preliminary PR checks andfail-fast: falsefor release suites.
Core Architecture Patterns
Pattern 1: Production Hardened CI Pipeline (.github/workflows/ci.yml)
name: CI Pipeline
on:
push:
branches: [main, develop]
pull_request:
branches: [main, develop]
# Enforce least-privilege permissions across the entire workflow
permissions: {}
# Cancel obsolete in-flight runs when new commits arrive
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
jobs:
lint-and-typecheck:
name: Code Quality & Type Check
runs-on: ubuntu-latest
timeout-minutes: 10
permissions:
contents: read
steps:
- name: Checkout Source Code
uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
with:
fetch-depth: 1
- name: Install pnpm Package Manager
uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3.0.0
with:
version: 9.15.4
run_install: false
- name: Setup Node.js Runtime
uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
with:
node-version: 22
cache: 'pnpm'
- name: Install Dependencies
run: pnpm install --frozen-lockfile
- name: Run Linter Audit
run: pnpm run lint
- name: Run TypeScript Verification
run: pnpm run typecheck
test-matrix:
name: Test Suite Matrix (Node ${{ matrix.node-version }} on ${{ matrix.os }})
needs: [lint-and-typecheck]
runs-on: ${{ matrix.os }}
timeout-minutes: 15
permissions:
contents: read
strategy:
fail-fast: false
matrix:
os: [ubuntu-latest, macos-latest, windows-latest]
node-version: [20, 22, 24]
steps:
- name: Checkout Source Code
uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
- name: Install pnpm Package Manager
uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3.0.0
with:
version: 9.15.4
- name: Setup Node.js Runtime
uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
with:
node-version: ${{ matrix.node-version }}
cache: 'pnpm'
- name: Install Dependencies
run: pnpm install --frozen-lockfile
- name: Execute Automated Unit & Integration Tests
run: pnpm test -- --coverage
- name: Upload Test Coverage Artifacts (Ubuntu Node 22 only)
if: matrix.os == 'ubuntu-latest' && matrix.node-version == 22
uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
with:
name: code-coverage-report
path: coverage/
retention-days: 14
Pattern 2: Zero-Secret OIDC Cloud Deployment (.github/workflows/deploy.yml)
name: Deploy Production Service
on:
push:
branches: [main]
permissions: {}
concurrency:
group: production-deployment
cancel-in-progress: false
jobs:
deploy-cloud:
name: OIDC Authenticated Cloud Deploy
runs-on: ubuntu-latest
environment:
name: production
url: https://api.production.internal
permissions:
id-token: write # Required for requesting OpenID Connect JWT tokens
contents: read
steps:
- name: Checkout Source Code
uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
- name: Authenticate with AWS via OIDC Role Assumption
uses: aws-actions/configure-aws-credentials@e3ddf1e3cb0f23561c4d1c6a56b5b9eb29570d8c # v4.0.2
with:
role-to-assume: arn:aws:iam::123456789012:role/github-actions-production-deployer
aws-region: ap-southeast-1
audience: sts.amazonaws.com
- name: Verify AWS Caller Identity
run: aws sts get-caller-identity
- name: Deploy Infrastructure or Edge Worker
run: |
echo "Deploying verified release to production..."
# Application deploy command executed here
Pattern 3: Custom Modular Composite Action (.github/actions/setup-project/action.yml)
name: Setup Project Environment
description: Reusable composite action to install pnpm, setup Node.js runtime, and hydrate cache.
inputs:
node-version:
description: Node.js major version
required: false
default: '22'
pnpm-version:
description: pnpm package manager version
required: false
default: '9.15.4'
runs:
using: 'composite'
steps:
- name: Enable Corepack and Install pnpm
shell: bash
run: |
corepack enable
corepack prepare pnpm@${{ inputs.pnpm-version }} --activate
- name: Setup Node.js with Native pnpm Cache
uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
with:
node-version: ${{ inputs.node-version }}
cache: 'pnpm'
- name: Hydrate Node Modules
shell: bash
run: pnpm install --frozen-lockfile
<a name="bahasa-indonesia"></a>
Bahasa Indonesia
Integrasi Orkestrasi
- Hulu & Siklus Hidup:
zero-to-prod-orchestrator(Deployment Fase 7),brainstorming,session-memory-manager. - Infrastruktur & Target Cloud:
ci-cd-devops-architect(topologi pipeline),docker-container-expert(build kontainer & SBOM),cloud-hosting-expert(deploy edge & cloud). - Keamanan & Brankas Rahasia:
zero-trust-secret-vault(otentikasi federasi OIDC),anti-slop(kebersihan pipeline & validasi gerbang ketat). - Otomasi Pengujian & Kualitas:
autonomous-tdd-debugger(eksekusi pengujian otomatis),e2e-testing-expert(suite Playwright),production-ready-hardener(pemeriksaan pra-rilis).
Deskripsi
Panduan standar industri enterprise untuk merancang dan memelihara pipeline Continuous Integration & Continuous Delivery (CI/CD) berperforma tinggi dan aman di GitHub Actions. Meliputi optimasi cache dependensi deterministik (pnpm/bun/uv/cargo), workflow pakai ulang (workflow_call), aksi komposit modular (using: 'composite'), matriks pengujian multi-platform, autentikasi cloud OpenID Connect (OIDC) tanpa kunci statis untuk AWS/GCP/Azure, penguncian aksi pihak ketiga dengan full commit SHA, hak akses minimum GITHUB_TOKEN, manajemen konkurensi, atestasi artifak, dan publikasi paket dengan sertifikasi provenance.
Kondisi Pemicu (Trigger Conditions)
- Membuat, mengonfigurasi, atau memodernisasi pipeline di folder
.github/workflows/. - Menerapkan pengujian otomatis pada Pull Request: linter, typecheck TypeScript, unit test, dan E2E test.
- Mengonfigurasi aksi komposit modular atau reusable workflow untuk efisiensi repo.
- Meningkatkan keamanan CI/CD: mengganti secret statis berumur panjang dengan OIDC federation.
- Mengunci third-party action menggunakan 40-karakter commit SHA permanen.
- Mengatur grup konkurensi dengan
cancel-in-progress: trueuntuk menghentikan workflow redundan. - Menghasilkan tanda tangan bukti perangkat lunak (SBOM / SLSA Level 3 Provenance).
- Otomasi rilis versi paket (npm, Docker OCI, VSIX) saat git tag dibuat.
Aturan Emas Keamanan & Performa 2026
- Prinsip Hak Akses Terendah (Least Privilege): Tentukan
permissions: {}di level workflow root, lalu berikan izin spesifik yang diperlukan pada setiap job (contents: read,pull-requests: write). - Kunci SHA Komit Penuh (Full SHA Pinning): Dilarang menggunakan tag yang dapat berubah seperti
@v4atau@main. Selalu gunakan hash 40 karakter commit SHA disertai komentar versi. - Autentikasi Cloud OIDC (Zero-Static Secrets): Gunakan OpenID Connect JWT token (
permissions: id-token: write) untuk berinteraksi dengan AWS/GCP/Azure tanpa menyimpan API Key permanen di repository secrets. - Pencegahan Penumpukan Antrean: Gunakan blok
concurrencydengan pembatalan otomatis untuk menghemat menit CI runner pada push beruntun. - Cache Dependensi Terpadu: Manfaatkan caching bawaan pada runner daripada melakukan download paket berulang dari internet pada setiap langkah pengujian.