add default value for endpoint

app.py

@@ -12,6 +12,7 @@ QUEUE_MAX_SIZE = int(os.getenv("QUEUE_MAX_SIZE", 20))
 QUEUE_CONCURENCY_COUNT = int(os.getenv("QUEUE_CONCURENCY_COUNT", 10))
 USERNAME = os.getenv("USERNAME")
 PASSWORD = os.getenv("PASSWORD")
+CHATBOT_ENDPOINT = os.getenv("CHATBOT_ENDPOINT", "http://localhost:5000")
 
 
 class LearningBotRequest(BaseModel):
@@ -83,7 +84,7 @@ with gr.Blocks() as demo:
         with gr.Column(scale=5):
             clear = gr.Button("Clear all converstation")
         with gr.Column(scale=5):
-            endpoint = gr.Textbox(label="Endpoint API")
+            endpoint = gr.Textbox(label="Endpoint API", value=CHATBOT_ENDPOINT)
             with gr.Accordion("Parameters", open=False):
                 user_serial = gr.Textbox(label="User serial")
                 context = gr.Textbox(label="context", value={})