FROM java:openjdk-8-jre

ENV SCALA_VERSION 2.11
ENV KAFKA_VERSION 0.9.0.0

RUN apt-get update && \
    apt-get install -y zookeeper wget supervisor dnsutils && \
    rm -rf /var/lib/apt/lists/* && \
    apt-get clean && \
    wget -q http://apache.mirrors.spacedump.net/kafka/"$KAFKA_VERSION"/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -O /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz && \
    tar xfz /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -C /opt && \
    rm /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz && \
    ln -s /opt/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION" /opt/kafka && \
    mkdir -p /etc/kafka

COPY docker-entrypoint.sh /docker-entrypoint.sh
COPY server.properties /etc/kafka/server.properties

ENTRYPOINT ["/docker-entrypoint.sh"]

## run kafka by default, 'run zookeeper' to start zookeeper instead
CMD ["run", "kafka"]