anchor.diff:      && npm install -g --unsafe-perm build-tools \
       && ln -sf /usr/share/zoneinfo/${TZ} /etc/localtime \
       && echo ${TZ} > /etc/timezone \
  -    && rm -rf /var/lib/apt/lists/* /tmp/*
  +    && rm -rf ~/.npm /var/lib/apt/lists/* /tmp/*
   
   COPY sdkconfig /root/.sdkman/etc/config
   COPY cnpm /usr/local/bin/cnpm
   COPY cmvn /usr/local/bin/cmvn
   
  +VOLUME ${NPM_CACHE_DIR}
  +VOLUME ${MAVEN_CACHE_DIR}
  +VOLUME ${GRADLE_CACHE_DIR}
  +
   CMD ["bash"]
  
positive.code: ENV ORACLEJDK_VERSION 8.0.171-oracle
  ENV NPM_CACHE_DIR /data/npm_cache
  ENV MAVEN_CACHE_DIR /data/maven_cache
  ENV SDKMAN_INSTALL_URL https://get.sdkman.io
  ENV NVM_INSTALL_URL https://raw.githubusercontent.com/creationix/nvm/v${NVM_VERSION}/install.sh
  
  
negative.code:     && localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8 \
      && echo -e 'LANG="en_US.UTF-8"' > /etc/default/locale \
      && echo -e 'LANGUAGE="en_US:en"' >> /etc/default/locale \
      && mkdir -p ${NPM_CACHE_DIR} ${MAVEN_CACHE_DIR} ${GRADLE_CACHE_DIR} \
      && curl -s ${NVM_INSTALL_URL} | bash \
      && curl -s ${SDKMAN_INSTALL_URL} | bash \
      && source ~/.bashrc \
  