fix(docker): add tk/X11 deps for headless; improve sloppy.py web mode

sloppy.py

@@ -28,8 +28,11 @@ if args.web_host is not None:
     from imgui_bundle import hello_imgui
     from src.api_hooks import HookServer
 
+    from src.gui_2 import App
+    app = App()
+
     if args.enable_test_hooks:
-        hook_server = HookServer()
+        hook_server = HookServer(app)
         hook_server.start()
 
     runner_params = hello_imgui.RunnerParams()
@@ -38,8 +41,6 @@ if args.web_host is not None:
     runner_params.imgui_window_params.default_imgui_window_type = hello_imgui.DefaultImGuiWindowType.provide_full_screen_docker_space
     runner_params.app_window_params.restore_previous_window_size = True
 
-    from src.gui_2 import App
-    app = App()
     hello_imgui.run(runner_params, lambda: app.render_frame())
 elif args.headless:
     from src.app_controller import AppController