anchor.diff:          nodejs \
           tini \
       && npm install -g npm \
  -    && mkdir -p /root/mybot/bin /root/.config/configstore/ /root/node_modules \
  +    && mkdir -p /root/mybot/bin /root/.config/configstore/ \
  +    && npm install -g yo generator-hubot \
       && chmod -R g+rwx /root/ \
  -    && cd /root/mybot \
  -    && npm install -g yo generator-hubot \
       && yes | yo hubot \
           --owner="Kevin Li <mlf4aiur@gmail.com>" \
           --name="Hubot" \
  
positive.code: 
  LABEL build.on=$built_on
  
  WORKDIR /root/mybot
  
  ENTRYPOINT ["/sbin/tini", "--"]
  
  CMD ["/root/mybot/bin/hubot", "--adapter", "slack"]
  
negative.code: MAINTAINER Kevin Li <mlf4aiur@gmail.com>
  
  ARG built_on="Unknown"
  
  WORKDIR /root/mybot
  
  RUN \
      apk add --update \
  