Dockerfile

# Builds an image for Apache Kafka from binary distribution.
#
# The netflixoss/java base image runs Oracle Java 8 installed atop the
# ubuntu:trusty (14.04) official image. Docker's official java images are
# OpenJDK-only currently, and the Kafka project, Confluent, and most other
# major Java projects test and recommend Oracle Java for production for optimal
# performance.

FROM netflixoss/java:8
MAINTAINER Ches Martin <ches@whiskeyandgrits.net>

# The Scala 2.12 build is currently recommended by the project.
ENV KAFKA_VERSION=0.10.2.1 KAFKA_SCALA_VERSION=2.12 JMX_PORT=7203
ENV KAFKA_RELEASE_ARCHIVE kafka_${KAFKA_SCALA_VERSION}-${KAFKA_VERSION}.tgz

RUN mkdir /kafka /data /logs

RUN apt-get update && \
  DEBIAN_FRONTEND=noninteractive apt-get install -y \
    ca-certificates

# Download Kafka binary distribution
ADD http://www.us.apache.org/dist/kafka/${KAFKA_VERSION}/${KAFKA_RELEASE_ARCHIVE} /tmp/
ADD https://dist.apache.org/repos/dist/release/kafka/${KAFKA_VERSION}/${KAFKA_RELEASE_ARCHIVE}.md5 /tmp/

WORKDIR /tmp

# Check artifact digest integrity
RUN echo VERIFY CHECKSUM: && \
  gpg --print-md MD5 ${KAFKA_RELEASE_ARCHIVE} 2>/dev/null && \
  cat ${KAFKA_RELEASE_ARCHIVE}.md5

# Install Kafka to /kafka
RUN tar -zx -C /kafka --strip-components=1 -f ${KAFKA_RELEASE_ARCHIVE} && \
  rm -rf kafka_*

ADD config /kafka/config
ADD start.sh /start.sh

# Set up a user to run Kafka
RUN groupadd kafka && \
  useradd -d /kafka -g kafka -s /bin/false kafka && \
  chown -R kafka:kafka /kafka /data /logs
USER kafka
ENV PATH /kafka/bin:$PATH
WORKDIR /kafka

# broker, jmx
EXPOSE 9092 ${JMX_PORT}
VOLUME [ "/data", "/logs" ]

CMD ["/start.sh"]