add workflow actions for building the app

.gitea/workflows/build.yaml

@@ -18,17 +18,22 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '20'
+          node-version: "20"
 
       - name: Install dependencies
-        run: npm install
+        run: cd frontend && npm install
 
       - name: Build the project
-        run: npm run build
+        run: cd frontend && npm run build
 
   build-and-push-docker-image:
     runs-on: ubuntu-latest
+    needs: build-portfolio-website
+    if: success()
     steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
       - name: Login to Docker registry
         uses: docker/login-action@v2
         with:
@@ -43,4 +48,3 @@ jobs:
           file: Dockerfile
           push: true
           tags: ${{ secrets.DOCKER_REGISTRY }}/my-portfolio:latest
-