npm 加个镜像源

Change-Id: Id31ba7d01620327ac071aab8da0e3c9dd2b32a9c
diff --git a/Dockerfile b/Dockerfile
index ae06f8b..99ba20b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,9 @@
 FROM node:16 as build
 WORKDIR /app
 COPY package*.json ./
-RUN npm install
+# 使用淘宝镜像源安装依赖
+RUN npm config set registry https://registry.npmmirror.com && \
+    npm install
 COPY . .
 RUN npm run build