Dockerfile.kafka

FROM registry.access.redhat.com/ubi8/ubi-minimal:8.10@sha256:cf095e5668919ba1b4ace3888107684ad9d587b1830d3eb56973e6a54f456e67

USER root

RUN microdnf update -y \
 && microdnf install -y curl gzip java-11-openjdk-headless tar tzdata-java \
 && microdnf reinstall -y tzdata \
 && microdnf clean all

ENV JAVA_HOME=/usr/lib/jvm/jre-11

# https://docs.oracle.com/javase/7/docs/technotes/guides/net/properties.html
# Ensure Java doesn't cache any dns results
RUN cd /etc/java/java-11-openjdk/*/conf/security \
 && sed -e '/networkaddress.cache.ttl/d' -e '/networkaddress.cache.negative.ttl/d' -i java.security \
 && echo 'networkaddress.cache.ttl=0' >> java.security \
 && echo 'networkaddress.cache.negative.ttl=0' >> java.security

ARG SCALA_VERSION="2.13"
ARG KAFKA_VERSION="3.6.2"

# https://github.com/apache/kafka/blob/2e2b0a58eda3e677763af974a44a6aaa3c280214/tests/docker/Dockerfile#L77-L105
ARG KAFKA_MIRROR="https://s3-us-west-2.amazonaws.com/kafka-packages"
SHELL ["/bin/bash", "-o", "pipefail", "-c"]
RUN mkdir -p "/opt/kafka-${KAFKA_VERSION}" \
 && chmod a+rw "/opt/kafka-${KAFKA_VERSION}" \
 && curl -s "$KAFKA_MIRROR/kafka_${SCALA_VERSION}-${KAFKA_VERSION}.tgz" | tar xz --strip-components=1 -C "/opt/kafka-${KAFKA_VERSION}"

# older kafka versions depend upon jaxb-api being bundled with the JDK, but it
# was removed from Java 11 so work around that by including it in the kafka
# libs dir regardless
WORKDIR /tmp
RUN curl -sLO "https://repo1.maven.org/maven2/javax/xml/bind/jaxb-api/2.3.0/jaxb-api-2.3.0.jar" \
 && for DIR in /opt/kafka-*; do cp -v jaxb-api-2.3.0.jar $DIR/libs/ ; done \
 && rm -f jaxb-api-2.3.0.jar

WORKDIR /opt/kafka-${KAFKA_VERSION}

ENV JAVA_MAJOR_VERSION=11

RUN sed -e "s/JAVA_MAJOR_VERSION=.*/JAVA_MAJOR_VERSION=${JAVA_MAJOR_VERSION}/" -i"" ./bin/kafka-run-class.sh

COPY entrypoint.sh /

USER 65534:65534

ENTRYPOINT ["/entrypoint.sh"]