message: Run as unprivileged user, reduce image size
diff: @@ -3,9 +3,15 @@ FROM node:9
  WORKDIR /usr/src/app
  COPY package.json .
  -RUN npm install --only=production --no-package-lock
  +
  +RUN npm install --only=production --no-package-lock && \
  + npm cache clean --force
  COPY . .
  +USER node
  +
  EXPOSE 8000
  +
  CMD [ "node", "server.js" ]
  +
  