Use env var PORT instead of --port flag

src/index.ts

@@ -91,19 +91,7 @@ const app = new Elysia()
     });
   });
 
-const port = (() => {
-  let p = 3000;
-  for (let i = 0; i < Bun.argv.length; i++) {
-    if (Bun.argv[i] === '--port') {
-      const parsedPort = Number(Bun.argv[i + 1]);
-      if (!isNaN(parsedPort) && parsedPort > 0) {
-        p = parsedPort;
-        break;
-      }
-    }
-  }
-  return p;
-})();
+const port = Number(process.env.PORT || 3000);
 
 app.listen(port, () => {
   console.log(`🦊 Elysia is running at ${app.server?.hostname}:${port}`);