anchor.diff:      gcloud config set component_manager/disable_update_check true && \
       gcloud config set metrics/environment github_docker_image
   
  -
  -ENV GOSU_VERSION 1.7
  -RUN curl -sSL "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" -o /usr/local/bin/gosu \
  -  && chmod +x /usr/local/bin/gosu \
  -  && gosu nobody true
  -
   # this one needs to match our host's remote api version
   ENV DOCKER_API_VERSION 1.21
   ENV DOCKER_VERSION 1.12.6
  -RUN curl -L https://get.docker.com/builds/Linux/x86_64/docker-$DOCKER_VERSION \
  +RUN curl -Ls https://get.docker.com/builds/Linux/x86_64/docker-$DOCKER_VERSION \
       > /usr/local/bin/docker && \
     chmod +x /usr/local/bin/*
   
  
positive.code: 
  # Install node version manager
  USER teamcity-agent
  RUN curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.2/install.sh | sh
  USER root
  
  # prepare docker-in-docker (with some sane defaults here,
  
negative.code:         git \
          && export CLOUD_SDK_REPO="cloud-sdk-$(lsb_release -c -s)" \
          && echo "deb https://packages.cloud.google.com/apt $CLOUD_SDK_REPO main" > /etc/apt/sources.list.d/google-cloud-sdk.list \
          && curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - \
          && apt-get update -qqy && apt-get install -qqy \
          google-cloud-sdk=${CLOUD_SDK_VERSION}-0 \
          google-cloud-sdk-app-engine-java \
  