anchor.diff:   && tar xvzf apache-cassandra-${CASSANDRA_VERSION}-bin.tar.gz \
    && rm apache-cassandra-${CASSANDRA_VERSION}-bin.tar.gz \
   
  -# Apache Kafka (Confluent 2.0 Distribution)
  -# && cd ~ \
  -# && wget http://packages.confluent.io/archive/2.0/confluent-${CONFLUENT_VERSION}-${SCALA_VERSION}.tar.gz \
  -# && tar xvzf confluent-${CONFLUENT_VERSION}-${SCALA_VERSION}.tar.gz \
  -# && rm confluent-${CONFLUENT_VERSION}-${SCALA_VERSION}.tar.gz \
  -
   # Apache Kafka (Confluent 3.0 Distribution)
    && cd ~ \
    && wget http://packages.confluent.io/archive/3.0/confluent-${CONFLUENT_VERSION}-${SCALA_MAJOR_VERSION}.tar.gz \
  
positive.code:  && wget https://s3.amazonaws.com/fluxcapacitor.com/packages/spark-${SPARK_PREVIOUS_VERSION}-bin-fluxcapacitor.tgz \
   && tar xvzf spark-${SPARK_PREVIOUS_VERSION}-bin-fluxcapacitor.tgz \
   && rm spark-${SPARK_PREVIOUS_VERSION}-bin-fluxcapacitor.tgz \
  
  # Livy Spark REST Server
   && cd ~ \
   && git clone --single-branch --recurse-submodules https://github.com/cloudera/livy.git \ 
   && cd livy \
   && mvn -DskipTests -Dspark.version=${SPARK_VERSION} clean package \
  
  # Apache Zeppelin
   && cd ~ \
  
negative.code: 
  # Kibana Plugins
   && cd ~ \
   && kibana-${KIBANA_VERSION}-linux-x64/bin/kibana plugin --install elastic/sense \
  
  # Apache Cassandra
   && cd ~ \
  