ENV KAFKA_VERSION="0.8.1.1" SCALA_VERSION="2.9.2"
 ADD download-kafka.sh /tmp/download-kafka.sh
-RUN chmod a+x /tmp/download-kafka.sh && /tmp/download-kafka.sh && tar xfz /tmp/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz -C /opt && rm /tmp/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz
+RUN chmod a+x /tmp/download-kafka.sh; sync;
+RUN /tmp/download-kafka.sh && tar xfz /tmp/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz -C /opt && rm /tmp/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz
 
 VOLUME ["/kafka"]
 
 ADD broker-list.sh /usr/bin/broker-list.sh
 ADD create-topics.sh /usr/bin/create-topics.sh
 # The scripts need to have executable permission
-RUN chmod a+x /usr/bin/start-kafka.sh; sync;
-RUN chmod a+x /usr/bin/broker-list.sh && \
+RUN chmod a+x /usr/bin/start-kafka.sh && \
+    chmod a+x /usr/bin/broker-list.sh && \
     chmod a+x /usr/bin/create-topics.sh
 # Use "exec" form so that it runs as PID 1 (useful for graceful shutdown)
 CMD ["start-kafka.sh"]