[Fix] Installazione Node.js nel runner Windows

- Aggiunto step per installare Node.js se mancante
- Usa Chocolatey per installazione automatica
- Node.js richiesto dalle GitHub Actions (checkout@v4)
- Fix: Cannot find node in PATH su runner Windows

.gitea/workflows/docker-build.yml

@@ -99,6 +99,18 @@ jobs:
       packages: write
       
     steps:
+      - name: Setup Node.js for Actions
+        run: |
+          # Check if node is available
+          if (!(Get-Command node -ErrorAction SilentlyContinue)) {
+            Write-Host "Node.js not found, installing..."
+            choco install nodejs -y --version=20.11.0
+            refreshenv
+          }
+          node --version
+        shell: pwsh
+        continue-on-error: false
+
       - name: Checkout repository
         uses: actions/checkout@v4