gitlab-ci-patterns

# GitLab CI Patterns Comprehensive GitLab CI/CD pipeline patterns for automated testing, building, and deployment. ## Purpose Create efficient GitLab CI pipelines with proper stage organization, caching, and deployment strategies. ## When to Use - Automate GitLab-based CI/CD - Implement multi-stage pipelines - Configure GitLab Runners - Deploy to Kubernetes from GitLab - Implement GitOps workflows ## Basic Pipeline Structure ```yaml stages: - build - test - deploy variables: DOCKER_DRIVER: overlay2 DOCKER_TLS_CERTDIR: "/certs" build: stage: build image: node:20 script: - npm ci - npm run build artifacts: paths: - dist/ expire_in: 1 hour cache: key: ${CI_COMMIT_REF_SLUG} paths: - node_modules/ test: stage: test image: node:20 script: - npm ci - npm run lint - npm test coverage: '/Lines\s*:\s*(\d+\.\d+)%/' artifacts: reports: coverage_report: coverage_format: cobertura path: coverage/cobertura-coverage.xml deploy: stage: deploy image: bitnami/kubectl:1.31 script: - kubectl apply -f k8s/ - kubectl rollout status deployment/my-app only: - main environment: name: production url: https://app.example.com ``` ## Docker Build and Push ```yaml build-docker: stage: build image: docker:24 services: - docker:24-dind before_script: - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY script: - docker bu...