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java9.md

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Create custom jre

1 Create a docker image will the full JDK

Dockerfile

FROM ubuntu:17.10

# RUN curl http://download.java.net/java/GA/jdk9/9/binaries/openjdk-9_linux-x64_bin.tar.gz | tar xvfz -
ADD openjdk-9_linux-x64_bin.tar.gz /opt/

ENV JAVA_HOME=/opt/jdk-9
ENV PATH=$PATH:$JAVA_HOME/bin

CMD ["java", "-version"]

# docker build --no-cache -t jdk-9 .
# docker run --rm jdk-9
# docker run --rm jdk-9 java --list-modules

2 Create custom runtime

docker run --rm --volume $PWD:/out jdk-9 \
  jlink --module-path /opt/jdk-9/jmods --verbose \
    --add-modules java.base \
    --compress 2 \
    --no-header-files \
    --output /out/jdk-9-base

3 Package custom runtime

Dockerfile.custom

FROM ubuntu:17.10

ADD jdk-9-base /opt/jdk-9

ENV JAVA_HOME=/opt/jdk-9
ENV PATH=$PATH:$JAVA_HOME/bin

CMD ["java", "-version"]

# docker build --no-cache -f Dockerfile.custom -t jdk-9-base .
# docker run --rm jdk-9-base
# docker run --rm jdk-9-base java --list-modules