kafka/docker/jvm/Dockerfile

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FROM eclipse-temurin:21-jre-alpine AS build-jsa

USER root

# Get kafka from https://archive.apache.org/dist/kafka and pass the url through build arguments
ARG kafka_url

COPY jsa_launch /etc/kafka/docker/jsa_launch
COPY server.properties /etc/kafka/docker/server.properties

RUN set -eux ; \
    apk update ; \
    apk upgrade ; \
    apk add --no-cache wget gcompat gpg gpg-agent procps bash; \
    mkdir opt/kafka; \
    wget -nv -O kafka.tgz "$kafka_url"; \
    wget -nv -O kafka.tgz.asc "$kafka_url.asc"; \
    tar xfz kafka.tgz -C /opt/kafka --strip-components 1; \
    wget -nv -O KEYS https://downloads.apache.org/kafka/KEYS; \
    gpg --import KEYS; \
    gpg --batch --verify kafka.tgz.asc kafka.tgz

# Generate jsa files using dynamic CDS for kafka server start command and kafka storage format command
RUN /etc/kafka/docker/jsa_launch


FROM eclipse-temurin:21-jre-alpine

# exposed ports
EXPOSE 9092

USER root

# Get kafka from https://archive.apache.org/dist/kafka and pass the url through build arguments
ARG kafka_url
ARG build_date


LABEL org.label-schema.name="kafka" \
      org.label-schema.description="Apache Kafka" \
      org.label-schema.build-date="${build_date}" \
      org.label-schema.vcs-url="https://github.com/apache/kafka" \
      maintainer="Apache Kafka"

RUN set -eux ; \
    apk update ; \
    apk upgrade ; \
    apk add --no-cache wget gcompat gpg gpg-agent procps bash; \
    mkdir opt/kafka; \
    wget -nv -O kafka.tgz "$kafka_url"; \
    wget -nv -O kafka.tgz.asc "$kafka_url.asc"; \
    tar xfz kafka.tgz -C /opt/kafka --strip-components 1; \
    wget -nv -O KEYS https://downloads.apache.org/kafka/KEYS; \
    gpg --import KEYS; \
    gpg --batch --verify kafka.tgz.asc kafka.tgz; \
    mkdir -p /var/lib/kafka/data /etc/kafka/secrets; \
    mkdir -p /etc/kafka/docker /usr/logs /mnt/shared/config; \
    adduser -h /home/appuser -D --shell /bin/bash appuser; \
    chown appuser:appuser -R /usr/logs /opt/kafka /mnt/shared/config; \
    chown appuser:root -R /var/lib/kafka /etc/kafka/secrets /etc/kafka; \
    chmod -R ug+w /etc/kafka /var/lib/kafka /etc/kafka/secrets; \
    cp /opt/kafka/config/log4j2.yaml /etc/kafka/docker/log4j2.yaml; \
    cp /opt/kafka/config/tools-log4j2.yaml /etc/kafka/docker/tools-log4j2.yaml; \
    rm kafka.tgz kafka.tgz.asc KEYS; \
    apk del wget gpg gpg-agent; \
    apk cache clean;

COPY server.properties /etc/kafka/docker/server.properties
COPY --from=build-jsa kafka.jsa /opt/kafka/kafka.jsa
COPY --from=build-jsa storage.jsa /opt/kafka/storage.jsa
COPY --chown=appuser:appuser resources/common-scripts /etc/kafka/docker
COPY --chown=appuser:appuser launch /etc/kafka/docker/launch

USER appuser

VOLUME ["/etc/kafka/secrets", "/var/lib/kafka/data", "/mnt/shared/config"]

CMD ["/etc/kafka/docker/run"]