fix git actions error using copilot advice

.github/workflows/build-and-deploy.yaml

@@ -1,6 +1,5 @@
 name: Build and Deploy to Kubernetes
 
-# Uncomment to enable auto-deployment on push to main
 on:
   push:
     branches: [ main ]
@@ -13,12 +12,17 @@ jobs:
       packages: write
 
     steps:
+      # Step 1: Checkout the repository code
       - name: Checkout code
         uses: actions/checkout@v3
 
+      # Step 2: Debug repository information (optional)
       - name: Debug Repository Info
-        run: echo "Repository: ${{ github.repository }}"
+        run: |
+          echo "Repository: ${{ github.repository }}"
+          echo "Actor: ${{ github.actor }}"
 
+      # Step 3: Log in to GitHub Container Registry
       - name: Log in to GitHub Container Registry
         uses: docker/login-action@v3
         with:
@@ -26,12 +30,15 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      # Step 4: Build and Push Docker Image with unique tag
       - name: Build and Push Docker Image
         run: |
           IMAGE_NAME="ghcr.io/${{ github.repository }}"
-          docker build -t "$IMAGE_NAME:latest" .
-          docker push "$IMAGE_NAME:latest"
+          TAG="${{ github.sha }}"
+          docker build -t "$IMAGE_NAME:$TAG" .
+          docker push "$IMAGE_NAME:$TAG"
 
+      # Step 5: Set up kubeconfig for Kubernetes access
       - name: Set up kubeconfig
         run: |
           mkdir -p ~/.kube
@@ -40,9 +47,11 @@ jobs:
         env:
           KUBECONFIG: ~/.kube/config
 
+      # Step 6: Deploy the Docker image to Kubernetes
       - name: Deploy to Kubernetes
         run: |
           IMAGE_NAME="ghcr.io/${{ github.repository }}"
-          kubectl set image deployment/homepage homepage=$IMAGE_NAME:latest -n web
+          TAG="${{ github.sha }}"
+          kubectl set image deployment/homepage homepage=$IMAGE_NAME:$TAG -n web
         env:
           KUBECONFIG: ~/.kube/config