Dockerfile

# Kafka and Zookeeper

FROM java:openjdk-8-jre

ENV DEBIAN_FRONTEND noninteractive
ENV SCALA_VERSION 2.12
ENV KAFKA_VERSION 0.10.2.0
ENV KAFKA_HOME /opt/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION"
ENV PATH=$KAFKA_HOME/bin:$PATH

# Install Kafka and Zookeeper and other needed things, no I don't care about layers
RUN apt-get update &&  apt-get install -y \
    zookeeper \
    wget \
    supervisor \
    dnsutils && \
    rm -rf /var/lib/apt/lists/* && \
    apt-get clean 

RUN wget -q http://apache.mirrors.spacedump.net/kafka/"$KAFKA_VERSION"/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -O /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz
RUN tar xfz /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -C /opt
RUN rm /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz

ADD scripts/start-kafka.sh /usr/bin/start-kafka.sh
# Supervisor config
ADD supervisor/kafka.conf supervisor/zookeeper.conf /etc/supervisor/conf.d/

# 2181 is zookeeper, 9092 is kafka
EXPOSE 2181 9092

CMD ["supervisord", "-n"]