add example background

myapp/app.py

@@ -38,7 +38,7 @@ with gr.Blocks() as demo:
 
         with gr.Column():
             output = gr.Image()
-            background = gr.Image(visible=False, type="filepath")
+            background = gr.Image("example.webp", visible=False, type="filepath")
             scale = gr.Slider(3, 15, 9, step=1, label="Scale")
 
             with gr.Row():
@@ -99,7 +99,7 @@ with gr.Blocks() as demo:
         return primary, secondary
 
     gr.on(
-        [button.click, prompt.submit],
+        [button.click, prompt.submit, demo.load],
         partial(gr.update, interactive=False),
         outputs=button,
     ).then(