装好系统后，可以在虚拟机上，访问下行地址直接下载
https://download.docker.com/linux/static/stable/x86_64/
下载完毕后
tar -xvf docker-18.06.3-ce.tgz （解压刚刚下载的文件）
复制解压好的文件到 /usr/bin目录中
cp docker/* /usr/bin
将docker注册为service
vim /etc/systemd/system/docker.service
将下列配置加到docker.service中并保存
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
启动
chmod +x /etc/systemd/system/docker.service #添加文件权限并启动docker
systemctl daemon-reload #重载unit配置文件
systemctl start docker #启动Docker
systemctl enable docker.service #设置开机自启
验证
systemctl status docker #查看Docker状态
docker -v #查看Docker版本
安装docker-compose
可以在虚拟机用git 下载
https://github.com/docker/compose/releases/
也可以用百度云盘下载
把文件直接下载到 /usr/local/bin目录下，或者可以复制到该目录下
sudo chmod +x /usr/local/bin/docker-compose （你下载的docker-compose文件）
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
接下来可以测试一下是否安装成功
docker-compose --version (你下载的docker-compose文件名)
docker和docker-compose就安装完毕了
