add distributed checkbox

app.py

@@ -77,6 +77,7 @@ def main():
     )
     config["instance_count"] = col2.number_input("Instance count", 1)
     config["use_spot"] = col1.selectbox("use spot instances", [False, True])
+    config["distributed"] = col1.selectbox("distributed training", [False, True])
     st.markdown("---")
 
     st.header("Credentials")