Port tweaks for testing.

src/main.rs

@@ -7,7 +7,9 @@ async fn main() {
     let app = Router::new()
         .route("/", get(|| async { "Incorrect reverse-proxy for '/'." }))
         .route("/fares", get(app_content));
-    let listener = tokio::net::TcpListener::bind("0.0.0.0:8000").await.unwrap();
+    let listener = tokio::net::TcpListener::bind("0.0.0.0:12000")
+        .await
+        .unwrap();
     axum::serve(listener, app).await.unwrap();
 }