Change ordering of node Dockerfile's USER directive (#3141)

Author: bwateratmsft

resources/templates/node/Dockerfile.template

@@ -1,11 +1,12 @@
 FROM node:14-alpine
 ENV NODE_ENV=production
-USER node
 WORKDIR /usr/src/app
 COPY ["package.json", "package-lock.json*", "npm-shrinkwrap.json*", "./"]
 RUN npm install --production --silent && mv node_modules ../
 COPY . .
 {{#each ports}}
 EXPOSE {{ . }}
 {{/each}}
+RUN chown -R node /usr/src/app
+USER node
 CMD {{{ toQuotedArray nodeCmdParts }}}