docker/install/ubuntu_install_java.sh

#!/bin/bash
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# to you under the Apache License, Version 2.0 (the
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# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
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set -o errexit -o nounset
set -o pipefail

apt-get update && apt-get install -y openjdk-8-jdk maven
arch=$(uname -m)
jre_arch="unknown"
case $arch in
    'x86_64')
	jre_arch="amd64"
	;;
    'aarch64')
	jre_arch="arm64"
	;;
    default)
	echo "Unknown architecture $arch" >&2
	exit 1
        ;;
esac

if [ ! -d "/usr/lib/jvm/java-8-openjdk-$jre_arch/jre" ]; then
  echo "error: missing openjdk for $jre_arch" >&2
  exit 1
fi
echo "export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-$jre_arch/jre" >> /etc/profile