update cnpm alias

Author: xiaoyao.yasin

Dockerfile

@@ -2,7 +2,10 @@ FROM node:10.23.1-alpine3.9
 
 COPY . /app/portal
 WORKDIR /app/portal
-RUN npm install -g cnpm --registry=https://registry.npmmirror.com \
+RUN  alias cnpm="npm --registry=https://registry.npmmirror.com \
+--cache=$HOME/.npm/.cache/cnpm \
+--disturl=https://npmmirror.com/mirrors/node \
+--userconfig=$HOME/.cnpmrc" \
   && cnpm i gitbook-cli -g \
   && gitbook install \
   && sed -i 's/confirm: true/confirm: false/g' ~/.gitbook/versions/3.2.3/lib/output/website/copyPluginAssets.js