anchor.diff:      KAFKA_VERSION=${KAFKA_VERSION:-0.11.0.1} \
       KAFKA_DOWNLOAD_MIRROR=${KAFKA_DOWNLOAD_MIRROR:-"https://dist.apache.org/repos/dist/release/kafka"} \
       KAFKA_HOME="/opt/kafka" \
  -    KAFKA_DATA_PATH="/opt/kafka/data" \
       KAFKA_LOG_DIRS="/opt/kafka/logs" \
       KAFKA_PORT=9092 \
       INTERNAL_ZOOKEEPER_PORT=2181
  
positive.code:     && adduser -u 1000 -S -D -G kafka -h ${KAFKA_HOME} -s /sbin/nologin -g "Kafka user" kafka \
      && chmod 755 ${KAFKA_HOME} \
      && mkdir -p ${KAFKA_LOG_DIRS} \
      && mkdir -p ${KAFKA_DATA_PATH} \
      && mkdir -p ${KAFKA_HOME}/provisioning \
      && chown -R kafka.kafka ${KAFKA_HOME}
  
  
negative.code: COPY provisioning/* ${KAFKA_HOME}/provisioning/
  RUN chmod +x ${KAFKA_HOME}/provisioning/*.sh
  
  RUN apk --no-cache --update add wget bash gnupg krb5-libs\
      && wget -q "${KAFKA_DOWNLOAD_MIRROR}/${KAFKA_VERSION}/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz" \
      && wget -q "${KAFKA_DOWNLOAD_MIRROR}/${KAFKA_VERSION}/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz.md5" \
      && echo "#### START VERIFY CHECKSUM ####" \
  