Add Node.js setup to Alpine Linux build workflow

- Include Node.js setup step in Alpine build job
- Use actions/setup-node@v3 to prepare Node.js environment

.github/workflows/build-alpine.yml

@@ -17,6 +17,9 @@ jobs:
     container: alpine:latest
 
     steps:
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+
       - name: Checkout repository
         uses: actions/checkout@v3
         with: