安装指定的docker版本

curl -s -o /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo

yum list docker-ce --showduplicates | sort -r

yum -y install docker-ce-20.10.24 docker-ce-cli-20.10.24 containerd.io 

mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://tuv7rqqq.mirror.aliyuncs.com"]
}
EOF

systemctl daemon-reload
systemctl restart docker

yum -y install bash-completion


source /usr/share/bash-completion/bash_completion

systemctl enable --now docker