Docker安装 一、环境准备备份原yum 源mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backupCentOS设置新yum 源wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo使用阿里云Docker Yum源yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo生成缓存yum makecache卸载旧版本Dockeryum remove docker docker-common docker-selinux二、安装Docker CE安装需要的依赖包yum install -y yum-utils device-mapper-persistent-data lvm2安装yum install docker-ce -y启动dockersudo systemctl start docker设置开机启动sudo systemctl enable docker配置Docker 镜像加速mkdir -p /etc/docker在新建目录下新建daemon.json，内容如下:{ "registry-mirrors": ["https://bpavu6gm.mirror.aliyuncs.com"] }重新加载配置文件systemctl daemon-reload重启dockersystemctl restart docker三、docker-compose安装下载docker-composewget https://github.com/docker/compose/releases/download/v2.19.1/docker-compose-linux-x86_64安装mv docker-compose-linux-x86_64 /usr/local/bin/docker-compose chmod +x /usr/local/bin/docker-compose查看是否成功docker-compose --version注意：可以选择对应的版本。