Dockerfile基于centos安装openjdk
FROM centos:7 RUN yum install -y \ java-1.8.0-openjdk \ java-1.8.0-openjdk-devel ENV JAVA_HOME /etc/alternatives/jre
FROM centos:7 RUN yum install -y \ java-1.8.0-openjdk \ java-1.8.0-openjdk-devel ENV JAVA_HOME /etc/alternatives/jre