快速安装docker全步骤

mv /etc/yum.repos.d/docker-ce.repo /etc/yum.repos.d/docker-ce.repo.bak

cat > /etc/yum.repos.d/docker-ce.repo <<EOF ##阿里云docker源

[docker-ce-stable]

name=Docker CE Stable - \$basearch

baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/\$basearch/stable

enabled=1

gpgcheck=1

gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

EOF

yum clean all

yum makecache

yum install -y docker-ce-20.10.7 docker-ce-cli-20.10.7 containerd.io #这是指定版本的，也可不指定。

echo '{

"registry-mirrors": [

"https://docker.1ms.run",

"https://docker.1panel.live",

"https://docker.ketches.cn"

]

}' | sudo tee /etc/docker/daemon.json

systemctl start docker

systemctl enable docker

sudo systemctl restart docker

docker version