set the port by env.PORT, specific node version in package.json

package.json

@@ -6,6 +6,9 @@
         "type": "git",
         "url": "https://github.com/louislam/uptime-kuma.git"
     },
+    "engines": {
+        "node": ">=14"
+    },
     "scripts": {
         "dev": "vite --host",
         "start": "npm run start-server",

server/server.js

@@ -20,7 +20,7 @@ const { login } = require("./auth");
 const passwordHash = require("./password-hash");
 const version = require("../package.json").version;
 const hostname = args.host || "0.0.0.0"
-const port = args.port || 3001
+const port = process.env.PORT || args.port || 3001
 
 console.info("Version: " + version)