fix: webpack dev server sock port

啸生 · 啸生 · commit 1a5062d4c79e · 2019-10-14T14:23:03.000+08:00
ref: webpack/webpack-dev-server#1792
diff --git a/packages/af-webpack/src/dev.js b/packages/af-webpack/src/dev.js
@@ -134,6 +134,7 @@ export default function dev({
         historyApiFallback: false,
         overlay: false,
         host: HOST,
+        sockPort: port,
         proxy,
         https: !!process.env.HTTPS,
         cert: CERT,
