add tunnel-only setup with Docker, including Dockerfile, docker-compose, and scripts

new-backend/start-tunnel-only.ps1

@@ -0,0 +1,42 @@
+# Monaco Backend - Tunnel Only Runner
+# This script helps you run the tunnel with backend on port 9090
+
+Write-Host "Monaco Backend - Tunnel Only Setup" -ForegroundColor Green
+Write-Host "====================================`n" -ForegroundColor Green
+
+# Check if required files exist
+$requiredFiles = @("cert.pem", "credentials.json", "config.tunnel-only.json")
+$missingFiles = @()
+
+foreach ($file in $requiredFiles) {
+    if (-not (Test-Path $file)) {
+        $missingFiles += $file
+    }
+}
+
+if ($missingFiles.Count -gt 0) {
+    Write-Host "ERROR: Missing required files:" -ForegroundColor Red
+    foreach ($file in $missingFiles) {
+        Write-Host "  - $file" -ForegroundColor Red
+    }
+    Write-Host "`nPlease ensure all required files are present." -ForegroundColor Yellow
+    exit 1
+}
+
+Write-Host "✓ All required files found`n" -ForegroundColor Green
+
+# Check if backend is running on port 9090
+Write-Host "Checking if backend is running on port 9090..." -ForegroundColor Yellow
+try {
+    $response = Invoke-WebRequest -Uri "http://localhost:9090" -TimeoutSec 2 -ErrorAction Stop
+    Write-Host "✓ Backend is running on port 9090`n" -ForegroundColor Green
+} catch {
+    Write-Host "⚠ Backend doesn't appear to be running on port 9090" -ForegroundColor Yellow
+    Write-Host "  Make sure to start your backend with: PORT=9090 go run main.go`n" -ForegroundColor Yellow
+}
+
+# Start the tunnel
+Write-Host "Starting Cloudflare tunnel..." -ForegroundColor Cyan
+Write-Host "Command: docker-compose -f docker-compose.tunnel-only.yml up --build`n" -ForegroundColor Gray
+
+docker-compose -f docker-compose.tunnel-only.yml up --build