cd /etc/yum.repos.d/
wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum install docker-ce -y
yum list installed | grep docker
yum remove -y docker.x86_64 docker-client.x86_64 docker-common.x86_64
yum install docker-ce -y
find / -name docker*
mv /usr/bin/docker* /usr/sbin/
docker version
systemctl start docker
vim /usr/lib/systemd/system/docker.service
ll /usr/sbin/dockerd
vim /usr/lib/systemd/system/docker.service
ExecStart=/usr/sbin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --insecure-registry 172.16.207.205
ExecStartPost=/sbin/iptables -I FORWARD -s 0.0.0.0/0 -j ACCEPT
systemctl daemon-reload
systemctl restart docker
journalctl -xe
ll /usr/sbin/dockerd
ll /etc/alternatives/dockerd
rm -rf /etc/alternatives/dockerd
ln -s /usr/sbin/dockerd-ce /etc/alternatives/dockerd
systemctl daemon-reload
systemctl restart docker