Fix startup sequence to ensure NiceGUI is ready before Nginx

start.sh

@@ -1,7 +1,18 @@
 #!/bin/bash
 
+# Start the application on port 7861 first
+python -m cadviewer &
+APP_PID=$!
+
+# Wait for the app to be ready
+echo "Waiting for NiceGUI to start..."
+while ! curl -s http://127.0.0.1:7861 > /dev/null; do
+    sleep 1
+done
+echo "NiceGUI is ready"
+
 # Start Nginx (which listens on 7860)
 nginx
 
-# Start the application on port 7861 (Nginx will proxy from 7860)
-python -m cadviewer 
+# Wait for the app to exit
+wait $APP_PID