Dockerfile

FROM anapsix/alpine-java

ARG kafka_version=1.0.0
ARG scala_version=2.12

MAINTAINER wurstmeister

ENV KAFKA_VERSION=$kafka_version \
    SCALA_VERSION=$scala_version \
    KAFKA_HOME=/opt/kafka \
    PATH=${PATH}:${KAFKA_HOME}/bin

COPY download-kafka.sh start-kafka.sh broker-list.sh create-topics.sh /tmp/

RUN apk add --update unzip wget curl docker jq coreutils \
 && chmod a+x /tmp/*.sh \
 && mv /tmp/start-kafka.sh /tmp/broker-list.sh /tmp/create-topics.sh /usr/bin \
 && /tmp/download-kafka.sh \
 && 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 \
 && rm /tmp/*

VOLUME ["/kafka"]

# Use "exec" form so that it runs as PID 1 (useful for graceful shutdown)
CMD ["start-kafka.sh"]