**下载仓库**
cd /etc/yum.repos.d/
wget http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo


**安装稳定版本**
yum list docker-ce --showduplicates | sort -r
yum install docker-ce-19.03.9 docker-ce-cli-19.03.9 containerd.io -y


**启动**
systemctl start docker
systemctl enable docker
systemctl status docker


**版本查看**
docker info
docker version

mkdir -p /etc/docker && touch /etc/docker/daemon.json

cat  /etc/docker/daemon.json
{
    "registry-mirrors": [
      "https://jxf8rbc5.mirror.aliyuncs.com"
    ],
    "data-root": "/data0/docker-home"
}

[root@10-222-32-10 /etc/yum.repos.d]# yum list docker-ce --showduplicates | sort -r
docker-ce.x86_64            3:20.10.9-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.8-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.7-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.6-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.5-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.4-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.3-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.2-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.1-3.el7                     docker-ce-stable
docker-ce.x86_64            3:20.10.12-3.el7                    docker-ce-stable
docker-ce.x86_64            3:20.10.11-3.el7                    docker-ce-stable
docker-ce.x86_64            3:20.10.10-3.el7                    docker-ce-stable
docker-ce.x86_64            3:20.10.0-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.9-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.8-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.7-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.6-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.5-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.4-3.el7                     docker-ce-stable
docker-ce.x86_64            3:19.03.3-3.el7                     docker-ce-stable
...


==========================================================================================================================================
 Package                          Arch                  Version                                     Repository                       Size
==========================================================================================================================================
Installing:
 containerd.io                    x86_64                1.4.12-3.1.el7                              docker-ce-stable                 28 M
 docker-ce                        x86_64                3:19.03.9-3.el7                             docker-ce-stable                 24 M
 docker-ce-cli                    x86_64                1:19.03.9-3.el7                             docker-ce-stable                 38 M
Installing for dependencies:
 container-selinux                noarch                2:2.119.2-1.911c772.el7_8                   extras-vault                     40 k

Transaction Summary
==========================================================================================================================================



[root@10-222-32-10 /etc/yum.repos.d]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
   Active: active (running) since Thu 2020-10-29 21:04:30 CST; 4s ago
     Docs: https://docs.docker.com
 Main PID: 3388 (dockerd)
    Tasks: 8
   Memory: 39.5M
   CGroup: /system.slice/docker.service
           └─3388 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.288200182+08:00" level=info msg="pickfirstBalancer: HandleSubConnStateChange: 0xc00012ce10, CONNECTING" module=grpc
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.288257574+08:00" level=info msg="pickfirstBalancer: HandleSubConnStateChange: 0xc00012ce10, READY" module=grpc
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.310159088+08:00" level=info msg="Graph migration to content-addressability took 0.00 seconds"
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.310747349+08:00" level=info msg="Loading containers: start."
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.403581691+08:00" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option ...d IP address"
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.433103208+08:00" level=info msg="Loading containers: done."
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.446735839+08:00" level=info msg="Docker daemon" commit=039a7df graphdriver(s)=overlay2 version=18.09.9
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.446793798+08:00" level=info msg="Daemon has completed initialization"
Oct 29 21:04:30 10-222-32-10 systemd[1]: Started Docker Application Container Engine.
Oct 29 21:04:30 10-222-32-10 dockerd[3388]: time="2020-10-29T21:04:30.464082388+08:00" level=info msg="API listen on /var/run/docker.sock"
Hint: Some lines were ellipsized, use -l to show in full.