Restore demo.launch() call required for Docker SDK

app.py

@@ -14,3 +14,9 @@ module = importlib.util.module_from_spec(spec)
 spec.loader.exec_module(module)
 
 demo = module.build_ui()
+
+if __name__ == '__main__':
+    demo.launch(
+        server_name='0.0.0.0',
+        server_port=7860,
+    )