anchor.diff:   && gpg -a --export E084DAB9 | apt-key add - \
    && apt-get update \
    && apt-get install -y r-base \
  - && apt-get install -y r-base-dev \
  -
  + && apt-get install -y r-base-dev 
  +
  +RUN \
   # libcurl (required to install.packages('devtools') in R)
  -# && apt-get install -y libcurl4-openssl-dev \
  + apt-get install -y libcurl4-openssl-dev \
    && apt-get install -y libzmq3 libzmq3-dev \
  - && R -e "install.packages(c('rzmq','repr','IRkernel','IRdisplay'), type = 'source', repos = c('http://cran.us.r-project.org', 'http://irkernel.github.io/'))" \
  - && R -e "IRkernel::installspec(user = FALSE)" \
  -
  + && R -e "install.packages(c('pbdZMQ','rzmq','repr', 'devtools'), type = 'source', repos = c('http://cran.us.r-project.org', 'http://irkernel.github.io/'))" \
  + && R -e "devtools::install_github('IRkernel/IRdisplay')" \
  + && R -e "devtools::install_github('IRkernel/IRkernel')" \
  + && R -e "IRkernel::installspec(user = FALSE)" 
  +
  +RUN \
   # Ganglia
  - && DEBIAN_FRONTEND=noninteractive apt-get install -y ganglia-monitor rrdtool gmetad ganglia-webfrontend \
  + DEBIAN_FRONTEND=noninteractive apt-get install -y ganglia-monitor rrdtool gmetad ganglia-webfrontend \
   
   # MySql (Required by Hive Metastore)
    && DEBIAN_FRONTEND=noninteractive apt-get install -y mysql-server \
  
positive.code:  && ./bazel-$BAZEL_VERSION-installer-linux-x86_64.sh --bin=/root/bazel-$BAZEL_VERSION/bin \
   && rm bazel-$BAZEL_VERSION-installer-linux-x86_64.sh 
  
  # TensorFlow Serving
  RUN \
   pip install grpcio \
   && apt-get update \
  
negative.code:  GRAPHFRAMES_VERSION=0.1.0-spark1.6 \
   FLINK_VERSION=1.0.0 \
   BAZEL_VERSION=0.2.2 \ 
   TENSORFLOW_VERSION=0.10.0 \
   TENSORFLOW_SERVING_VERSION=0.4.1 \
  # JAVA_HOME required here (versus config/bash/pipeline.bashrc) 
  #   in order to properly install Bazel (used by TensorFlow) 
  