fix: dockerfile

Dockerfile

@@ -1,6 +1,6 @@
-FROM node:12-alpine as builder
+FROM node:16-alpine as builder
 WORKDIR /code
-RUN yarn config set registry https://registry.npm.taobao.org/
+RUN npm config set registry https://registry.npm.taobao.org/
 ADD package.json /code
 ADD package-lock.json /code
 RUN npm install