Update app.py

app.py

@@ -1,6 +1,7 @@
 import subprocess
 
-subprocess.run("uvicorn application.server.main:app --host 0.0.0.0 --port 5051", shell=True)
+#port =  $PORT
+subprocess.run("uvicorn application.server.main:app --host 0.0.0.0 --port 8501", shell=True)
 
 
 import streamlit as st