ci: update Node.js requirement and improve code consistency

Updated the README to require Node.js 18+ and added Docker usage instructions. Refactored util/client-sign.js for consistent code style and improved variable naming. Fixed the login_cellphone module to use 'weapi' in createOption. Removed deprecated code from server.js and improved CORS header formatting. Minor fix in util/request.js for user agent selection.

Co-Authored-By: binaryify <[email protected]>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "NeteaseCloudMusicApi",
-  "version": "4.28.0",
+  "version": "4.28.1",
   "description": "网易云音乐 NodeJS 版 API",
   "scripts": {
     "start": "node app.js",
@@ -69,11 +69,11 @@
     "axios": "^1.13.2",
     "crypto-js": "^4.2.0",
     "dotenv": "^17.2.3",
-    "express": "^4.21.2",
+    "express": "^4.22.1",
     "express-fileupload": "^1.5.2",
     "md5": "^2.3.0",
     "music-metadata": "^7.14.0",
-    "node-forge": "^1.3.1",
+    "node-forge": "^1.3.3",
     "pac-proxy-agent": "^7.2.0",
     "qrcode": "^1.5.4",
     "safe-decode-uri-component": "^1.2.1",