removed app variable

app.py

@@ -20,7 +20,13 @@ def greet(name):
 # - outputs: The component(s) to display the result. Here we use a simple Text component.
 # - title: The title that appears at the top of the UI.
 # - description: A brief description of what the app does.
-app = gr.Interface(
+
+# Launch the application
+# To run in a Docker container (like on Hugging Face Spaces), you must
+# set server_name="0.0.0.0" to listen on all network interfaces.
+# The server_port should match the port exposed in your Dockerfile and readme.md (7860).
+if __name__ == "__main__":
+    gr.Interface(
     fn=greet,
     inputs=gr.Textbox(
         lines=1, 
@@ -30,11 +36,4 @@ app = gr.Interface(
     outputs=gr.Text(label="Greeting"),
     title="Simple Greeting App",
     description="A simple test application built with Python and Gradio. Enter your name to receive a greeting."
-)
-
-# Launch the application
-# To run in a Docker container (like on Hugging Face Spaces), you must
-# set server_name="0.0.0.0" to listen on all network interfaces.
-# The server_port should match the port exposed in your Dockerfile and readme.md (7860).
-if __name__ == "__main__":
-    app.launch(server_name="0.0.0.0", server_port=7860)
+).launch(server_name="0.0.0.0", server_port=7860)