Add GitHub Actions deploy workflow

.github/workflows/deploy.yaml

@@ -0,0 +1,41 @@
+# .github/workflows/deploy.yaml
+
+name: Build and Deploy to Kubernetes
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and Push Docker Image
+        run: |
+          IMAGE_NAME=ghcr.io/${{ github.repository }}
+          docker build -t $IMAGE_NAME:latest .
+          docker push $IMAGE_NAME:latest
+
+      - name: Set up Kubeconfig
+        run: |
+          mkdir -p ~/.kube
+          echo "${{ secrets.KUBECONFIG }}" > ~/.kube/config
+          chmod 600 ~/.kube/config
+
+      - name: Deploy to Kubernetes
+        run: |
+          kubectl set image deployment/homepage homepage=ghcr.io/${{ github.repository }}:latest -n web