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7 changes: 5 additions & 2 deletions build-tools/docker/Dockerfile
Original file line number Diff line number Diff line change
Expand Up @@ -181,8 +181,11 @@ RUN apt-get -q update && apt-get -q install --no-install-recommends -y openjdk-8
RUN apt-get -q update && apt-get -q install --no-install-recommends -y default-jre-headless openjdk-11-jdk-headless \
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/* \
&& update-java-alternatives -s java-1.8.0-openjdk-amd64 \
&& rm -f /usr/lib/jvm/default-java \
&& update-java-alternatives -s java-1.8.0-openjdk-amd64 || :
# since update alternatives might fail on executables that we don't really need (e.g. appletviewer)
# and return with exit code <0 (actually: 2), we can simply do a sanity check if the version is
# as expected for "java" executable after the update and go on
RUN java -version 2>&1 | grep "1.8.0" && rm -f /usr/lib/jvm/default-java \
&& ln -s java-8-openjdk-amd64 /usr/lib/jvm/default-java
ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64

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