So I have a Dockerfile which i think will work well. Before I commit and create the PR can I ask for some direction? Would we use this as
a: the Dockerfile is in the source tree, and does a 'COPY .' into the container to build? This is what I did for https://github.com/fluent/fluent-bit. It makes it very simple to build the docker container as a developer, but also as part of the travis pipeline or the dockerhub pipeline.... This would mean replacing the 'git clone/checkout' in the below. b: The Dockerfile is standalone, it does a clone of the repo (as below). This is not as convenient for a dev (you need to have pushed) nor for the other pipelines, but it does allow for a single point in time release. For the 'config', what i have gone for is any druid_XXX env variable is converted to druid.xxx config in _common/properties or service/properties. I have created a 'batteries included' image with all the extensions in place and the mysql connector. Its a bit big but all Java containers are hefty. This has all services in it, but it runs whichever is on the command line (e.g. docker run druid middleManager). I've also forced the 'forked subprocesses' in middleManager to log to stdout as is convention in containers. Its not convention to fork big things like that, but that's another story. Comments on a: vs b: ? Comments on other things to consider? I'll commit and send a pull req for comment next week. FROM maven:3-jdk-8 as builder ARG DRUID_VERSION=0.13.0-incubating RUN mkdir -p /src \ && cd /src \ && git clone https://github.com/apache/incubator-druid \ && cd incubator-druid \ && git checkout tags/druid-${DRUID_VERSION} \ && mvn install -ff -DskipTests -Dforbiddenapis.skip=true -Pdist -Pbundle-contrib-exts \ && tar -zxf ./distribution/target/apache-druid-${DRUID_VERSION}-bin.tar.gz -C /opt \ && ln -s /opt/apache-druid-$DRUID_VERSION /opt/druid COPY sha256sums.txt /tmp RUN cd /opt/druid/extensions/mysql-metadata-storage \ && wget -O mysql-connector-java-5.1.38.jar http://central.maven.org/maven2/mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.jar \ && sha256sum --ignore-missing -c /tmp/sha256sums.txt RUN addgroup --gid 1000 druid \ && adduser --home /opt/druid --shell /bin/sh --no-create-home --uid 1000 --gecos '' --gid 1000 --disabled-password druid \ && mkdir -p /opt/druid/var \ && chown -R druid:druid /opt/druid # Use :debug to get a busybox shell so that scripts can run FROM gcr.io/distroless/java:debug MAINTAINER Don Bowman <d...@agilicus.com> RUN ["/busybox/busybox", "--install", "/bin"] COPY --from=builder /etc/passwd /etc/passwd COPY --from=builder /etc/group /etc/group COPY --from=builder --chown=druid /opt /opt COPY druid.sh /druid.sh USER druid VOLUME /opt/druid/var WORKDIR /opt/druid ENTRYPOINT ["/druid.sh"]
