CI/CD Pipeline

CI/CD Pipeline Documentation

The puppeteer-mcp project uses a comprehensive automated release pipeline built with GitHub Actions. This pipeline ensures code quality, security, and reliable releases.

Enterprise CI/CD

The CI/CD pipeline provides enterprise-grade automation with multi-stage validation, security scanning, performance monitoring, and automated rollback capabilities for production reliability.

Pipeline Components

1. Continuous Integration (CI)

Workflow: .github/workflows/ci-enhanced.yml

• Triggers: Push to main/develop, Pull requests, Merge groups
• Features:
  • Multi-version Node.js testing (20.x, 22.x)
  • Code quality checks (ESLint, TypeScript, Prettier)
  • Comprehensive test suite (unit, integration, acceptance)
  • Security scanning (Trivy, npm audit)
  • Performance benchmarks
  • Docker image validation
  • Breaking change detection

2. Automated Release Pipeline

Workflow: .github/workflows/release-automated.yml

• Triggers: Manual workflow dispatch
• Features:
  • Semantic versioning with automatic version bumping
  • Changelog generation from commit messages
  • Release candidate testing
  • NPM package publishing
  • Docker image building and pushing
  • GitHub release creation
  • Documentation updates

3. Dependency Updates

Workflow: .github/workflows/dependency-updates.yml

• Triggers: Weekly schedule (Mondays 9 AM UTC), Manual dispatch
• Features:
  • Automated dependency analysis
  • Security vulnerability patching
  • Grouped update PRs
  • Test validation before merging

4. Hotfix Workflow

Workflow: .github/workflows/hotfix.yml

• Triggers: Manual dispatch for critical issues
• Features:
  • Fast-track critical fixes
  • Isolated testing environment
  • Automatic backporting
  • Rollback procedures

5. Performance Monitoring

Workflow: .github/workflows/performance-monitoring.yml

• Triggers: Push to main/develop, PRs, Daily schedule
• Features:
  • Startup time benchmarks
  • Browser pool performance
  • Memory usage tracking
  • API response time monitoring
  • Historical trend analysis

6. Documentation Updates

Workflow: .github/workflows/docs-update.yml

• Triggers: Code changes, Release events, Manual dispatch
• Features:
  • API documentation generation
  • Guide updates
  • Starlight site building
  • GitHub Pages deployment

Release Process

1. Pre-Release Checklist

Run the release checklist to ensure everything is ready:

npm run release:checklist

This validates:

• All tests passing
• No security vulnerabilities
• Documentation updated
• Version consistency
• Clean git state

2. Creating a Release

Option A: Automated Release (Recommended)

1. Go to GitHub Actions
2. Select “Automated Release Pipeline”
3. Click “Run workflow”
4. Choose release type (patch/minor/major)
5. Review and approve the generated PR

Option B: Local Release

# Dry run to preview changes
npm run release:dry-run

# Create release
npm run release         # Auto-detect version bump
npm run release:patch   # Patch release (1.0.0 → 1.0.1)
npm run release:minor   # Minor release (1.0.0 → 1.1.0)
npm run release:major   # Major release (1.0.0 → 2.0.0)

3. Pre-release Versions

For beta/alpha releases:

npm run release:prerelease -- --prerelease beta

4. Hotfix Process

For critical issues in production:

1. Trigger the hotfix workflow
2. Specify the affected version
3. Describe the issue
4. The workflow will:
   • Create a hotfix branch
   • Run isolated tests
   • Deploy the fix
   • Merge back to main/develop

Rollback Procedures

If a release causes issues:

npm run release:rollback

This will:

1. List recent releases
2. Let you select a version to rollback to
3. Deprecate the problematic version on NPM
4. Re-publish the previous version as latest
5. Create documentation about the rollback

Semantic Versioning

We follow Semantic Versioning:

• MAJOR: Breaking changes (feat!: or BREAKING CHANGE:)
• MINOR: New features (feat:)
• PATCH: Bug fixes (fix:)

Commit Message Format

type(scope): subject

body

footer

Types:

Type	Description
feat	New feature
fix	Bug fix
docs	Documentation changes
style	Code style changes
refactor	Code refactoring
perf	Performance improvements
test	Test changes
build	Build system changes
ci	CI/CD changes
chore	Other changes

Security Measures

Automated Security Scanning

• Trivy: Container and filesystem vulnerability scanning
• npm audit: Dependency vulnerability checking
• CodeQL: Static code analysis
• OWASP Dependency Check: Additional vulnerability detection

Security Gates

Security Requirements

1. No high/critical vulnerabilities allowed in production dependencies
2. Security scans on every PR
3. Daily security monitoring
4. Automated dependency updates for security patches

Performance Monitoring

Metrics Tracked

• Startup time
• Browser pool initialization
• Memory usage
• API response times
• Bundle size

Performance Thresholds

Metric	Threshold
Startup time	< 5 seconds
Memory usage	< 512MB
API response	< 100ms average
Bundle size	< 50MB

Quality Gates

Required Checks

All PRs must pass:

1. All test suites
2. TypeScript compilation
3. ESLint (no errors)
4. Security scans
5. Performance benchmarks

Optional Checks

• Code coverage (target: 80%)
• Documentation generation
• Bundle size analysis

Monitoring and Notifications

Release Monitoring

After each release:

1. NPM package availability check
2. Docker image pull verification
3. Installation testing
4. Performance baseline comparison

Notifications

• GitHub Issues for release reports
• PR comments with benchmark results
• Release notifications in GitHub

Troubleshooting

Common Issues and Solutions

1. Release fails at NPM publish

• Check NPM_TOKEN secret
• Verify package.json is valid
• Ensure version doesn’t already exist

2. Docker build fails

• Check Dockerfile syntax
• Verify base image availability
• Review multi-platform compatibility

3. Tests fail in CI but pass locally

• Check environment variables
• Review service dependencies
• Verify Node.js version match

Debug Mode

Enable debug logging in workflows:

env:
  ACTIONS_STEP_DEBUG: true
  ACTIONS_RUNNER_DEBUG: true

Best Practices

CI/CD Best Practices

1. Always run the release checklist before creating a release
2. Use semantic commit messages for automatic versioning
3. Test releases in pre-release before going to production
4. Monitor releases for 24-48 hours after deployment
5. Document rollback reasons if needed
6. Keep dependencies updated weekly
7. Review performance trends regularly

Scripts Reference

Script	Description
npm run release:checklist	Run pre-release validations
npm run release	Create a new release
npm run release:dry-run	Preview release changes
npm run release:rollback	Rollback to previous version
npm run changelog	Generate changelog
npm run version:check	Check version consistency
npm run security:check	Run security validations

GitHub Secrets Required

Secret	Purpose
NPM_TOKEN	NPM authentication token
DOCKER_USERNAME	Docker Hub username
DOCKER_PASSWORD	Docker Hub password
CODECOV_TOKEN	Codecov integration token
APP_ID	GitHub App ID for automated PRs
APP_PRIVATE_KEY	GitHub App private key

Maintenance

Weekly Tasks

• Review dependency updates
• Check performance trends
• Review security alerts

Monthly Tasks

• Audit CI/CD pipeline performance
• Review and update documentation
• Clean up old artifacts
• Review rollback history

Quarterly Tasks

• Review and update security policies
• Performance baseline updates
• CI/CD pipeline optimization
• Dependency major version updates

Related Documentation

• Development Workflow for development processes
• Security Testing for security validation
• Performance Testing for performance monitoring
• Version Management for version control

Conclusion

The CI/CD pipeline provides enterprise-grade automation ensuring code quality, security, and reliable releases. With comprehensive validation stages, automated rollback capabilities, and continuous monitoring, the pipeline maintains high standards for production deployments while enabling rapid development cycles.