基于CentOS 7的一键安装docker 脚本

#!/bin/bash
#
#********************************************************************

COLOR="echo -e \\033[1;31m"
END="\033[m"
VERSION="19.03.5-3.el7"
wget -P /etc/yum.repos.d/ https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo || { ${COLOR}"互联网连接失败，请检查网络配置!"${END};exit; }
yum clean all
yum -y install docker-ce-$VERSION docker-ce-cli-$VERSION || { ${COLOR}"Base,Extras的yum源失败,请检查yum源配置"${END};exit; }
mkdir -p /etc/docker
cat > /etc/docker/daemon.json <<EOF
{
"registry-mirrors": ["https://si7y70hh.mirror.aliyuncs.com"]
}
EOF

systemctl restart docker
docker version && ${COLOR}"Docker安装成功"${END} || ${COLOR}"Docker安装失败"${END}