anchor.diff:  FROM alpine:3.6
   
   LABEL maintainer="mritd <mritd1234@gmail.com>"
  +
  +ARG TZ="Asia/Shanghai"
  +
  +ENV TZ ${TZ}
   
   COPY Gemfile Gemfile
   
  
positive.code:     && gem install bundler \
      && bundle config build.jekyll --no-rdoc \
      && bundle install \
      && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
      && echo "Asia/Shanghai" > /etc/timezone \
      && apk del .build-deps \
      && rm -f /Gemfile* \
      && rm -rf /var/cache/apk/* \
      && rm -rf /usr/lib/lib/ruby/gems/*/cache/* \
      && rm -rf ~/.gem
  
  WORKDIR /root
  
  
negative.code:     && apk add bash build-base libffi zlib libxml2 \
          libxslt ruby ruby-io-console ruby-json yaml \
          nodejs git perl tzdata \
      && apk add --virtual .build-deps \
          build-base libffi-dev zlib-dev libxml2-dev \
          libxslt-dev ruby-dev \
      && echo 'gem: --no-document' >> ~/.gemrc \
  