GitLab vs Jenkins vs GitHub Actions

# .gitlab-ci.yml - GitLab CI/CD Pipeline stages: - build - test - deploy variables: DOCKER_REGISTRY: $CI_REGISTRY IMAGE_NAME: $CI_REGISTRY_IMAGE build: stage: build image: docker:latest services: - docker:dind script: - docker build -t $IMAGE_NAME:$CI_COMMIT_SHORT_SHA . - docker push $IMAGE_NAME:$CI_COMMIT_SHORT_SHA test: stage: test image: node:18 script: - npm install - npm test artifacts: reports: junit: test-results.xml deploy: stage: deploy image: bitnami/kubectl:latest script: - kubectl set image deployment/my-app my-app=$IMAGE_NAME:$CI_COMMIT_SHORT_SHA environment: name: production url: https://example.com when: manual only: - main

// Jenkinsfile - Jenkins Pipeline pipeline { agent { kubernetes { yaml ''' apiVersion: v1 kind: Pod spec: containers: - name: node image: node:18 command: ['cat'] tty: true - name: docker image: docker:latest command: ['cat'] tty: true volumeMounts: - name: docker-sock mountPath: /var/run/docker.sock volumes: - name: docker-sock hostPath: path: /var/run/docker.sock ''' } } environment { DOCKER_REGISTRY = 'registry.example.com' IMAGE_NAME = 'my-app' } stages { stage('Build') { steps { container('node') { sh 'npm install' sh 'npm run build' } } } stage('Test') { steps { container('node') { sh 'npm test' } } post { always { junit 'test-results.xml' } } } stage('Build Image') { steps { container('docker') { sh 'docker build -t $DOCKER_REGISTRY/$IMAGE_NAME:$BUILD_NUMBER .' sh 'docker push $DOCKER_REGISTRY/$IMAGE_NAME:$BUILD_NUMBER' } } } stage('Deploy') { steps { sh 'kubectl set image deployment/my-app my-app=$DOCKER_REGISTRY/$IMAGE_NAME:$BUILD_NUMBER' } } } post { success { slackSend(channel: '#deployments', message: "Deployment successful: ${env.JOB_NAME} - ${env.BUILD_NUMBER}") } failure { slackSend(channel: '#deployments', message: "Deployment failed: ${env.JOB_NAME} - ${env.BUILD_NUMBER}") } } }

# .github/workflows/ci-cd.yml - GitHub Actions name: CI/CD Pipeline on: push: branches: [main, develop] pull_request: branches: [main] env: DOCKER_REGISTRY: ghcr.io IMAGE_NAME: ${{ github.repository }} jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Setup Node.js uses: actions/setup-node@v4 with: node-version: '18' cache: 'npm' - name: Install dependencies run: npm ci - name: Build application run: npm run build - name: Upload artifacts uses: actions/upload-artifact@v3 with: name: build-artifacts path: dist/ test: runs-on: ubuntu-latest needs: build steps: - uses: actions/checkout@v4 - name: Setup Node.js uses: actions/setup-node@v4 with: node-version: '18' cache: 'npm' - name: Install dependencies run: npm ci - name: Run tests run: npm test - name: Upload test results uses: actions/upload-artifact@v3 if: always() with: name: test-results path: test-results.xml build-image: runs-on: ubuntu-latest needs: test permissions: contents: read packages: write steps: - uses: actions/checkout@v4 - name: Login to GitHub Container Registry uses: docker/login-action@v3 with: registry: ${{ env.DOCKER_REGISTRY }} username: ${{ github.actor }} password: ${{ secrets.GITHUB_TOKEN }} - name: Build and push Docker image uses: docker/build-push-action@v5 with: context: . push: true tags: ${{ env.DOCKER_REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }} deploy: runs-on: ubuntu-latest needs: build-image if: github.ref == 'refs/heads/main' steps: - name: Deploy to production run: | kubectl set image deployment/my-app my-app=${{ env.DOCKER_REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }} environment: name: production url: https://example.com