anchor.diff:   && gem update --system  \
    && ( bundler --version || gem install bundler ) \
    && bundle config --global jobs `grep -c processor /proc/cpuinfo` \
  - && bundle config --global cache_all true
  + && bundle config --global cache_all true \
  + && gem cleanup all
   
   COPY Gemfile Gemfile.lock xcflushd.gemspec ${APP_HOME}/
   COPY lib/xcflushd/version.rb ${APP_HOME}/lib/xcflushd/
  
positive.code: USER root
  RUN test -z "${BUILD_DEPS}" \
   || ( \
        apt-get update && apt-get install -y -q ${BUILD_DEPS} \
      )
  
  WORKDIR ${APP_HOME}
  
negative.code:  && chown -R ${USER_NAME}: ${USER_HOME} \
   && apt-get -y -q clean
  
  RUN apt-get install -y -q openjdk-8-jre && apt-get -y -q clean
  
  USER ${USER_NAME}
  
  