Add full test coverage for ProductCatalogService & ESLint CI enforcement & docker build push and update deployment

Author: neamulkabiremon

.github/workflows/frontend.yaml

@@ -54,4 +54,51 @@ jobs:
       - name: Run ESLint (code quality check)
         run: |
           cd src/frontend
-          npm run lint -- --max-warnings=0 --quiet
+          npm run lint -- --max-warnings=0 --quiet
+
+  build-and-push:
+    runs-on: ubuntu-latest
+    needs: [unit-testing, code-quality]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Docker
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Docker
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./src/frontend/Dockerfile
+
+          push: true
+          tags: neamulkabiremon/checkout:${{ github.sha }}
+  
+  update-k8s-deployment:
+    runs-on: ubuntu-latest
+    needs: build-and-push
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+       
+      - name: Update Kubernetes Deployment
+        run: |
+          sed -i "s|image: .*|image: ${{ secrets.DOCKER_USERNAME }}/frontend:${{ github.sha }}|" kubernetes/frontend/deploy.yaml
+          cat kubernetes/frontend/deploy.yaml
+
+      - name: Commit and push updated Kubernetes manifest
+        run: |
+           git config --global user.email "neamulkabiremon@gmail.com"
+           git config --global user.name "neamulkabiremon"
+           git add kubernetes/frontend/deploy.yaml
+           git commit -m "[CI]: Update checkout deployment image tag"
+           git push