Added unit testing, code quality, dockerize and update the deployment job

Author: neamulkabiremon

.github/workflows/recommendation.yaml

@@ -53,4 +53,49 @@ jobs:
           flake8 . --max-line-length=100 --exclude=demo_pb2.py,demo_pb2_grpc.py,venv
         continue-on-error: true
 
-  
+  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: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./src/recommendation/Dockerfile
+
+          push: true
+          tags: neamulkabiremon/recommendation:${{ 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: ${{ secrets.DOCKER_USERNAME }}/recommendation:${{ github.sha }}|" kubernetes/recommendation/deploy.yaml
+          cat kubernetes/recommendation/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/recommendation/deploy.yaml
+           git commit -m "[CI]: Update checkout deployment image tag"
+           git push