1.安装底层⼯具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
2.加⼊阿⾥云yum仓库提速docker下载过程
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
3.更新⼀下仓库的源信息
sudo yum makecache
4.⾃动安装下载Docker
sudo yum -y install docker-ce
5.启动Docker服务
sudo service docker start
6.验证docker是否启动成功
docker version
7.Aliyun加速镜像下载
Centos命令⾏输⼊下⾯的指令加⼊Aliyun容器镜像，加速镜像的下载
https://cr.console.aliyun.com/cn-shanghai/instances/mirrors
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://ufgb0bmz.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
231安装OpenJDK8+
yum -y install java-1.8.0-openjdk-devel.x86_64
sudo cat >> /etc/profile <<-'EOF'
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
EOF
source /etc/profile
echo $JAVA_HOME