官网：https://docs.docker.com/engine/install/centos/
1. 安装步骤:
1.检查
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
2. 设置存储库
sudo yum install -y yum-utils
sudo yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo3.安装最新版本的docker引擎：
sudo yum install docker-ce docker-ce-cli containerd.io4.启动Docker
$ sudo systemctl start docker
5.通过运行hello-world 映像来验证是否正确安装了Docker Engine 。
$ sudo docker run hello-world
6.验证：
docker -version或者docker run hello-world
7.设置docker启动时启动
sudo systemctl enable docker
若要禁用此行为，请disable改用。
$ sudo systemctl disable docker
8.
vim /etc/docker/daemon.json
{
"registry-mirrors":["https://docker.mirrors.ustc.edu.cn"]
}
systemctl daemon-reload
systemctl restart docker
2.其他
1.非root用户
sudo groupadd docker
sudo usermod -aG docker your-user
标签：sudo,ce,systemctl,yum,https,Linux,Docker,安装,docker
来源： https://www.cnblogs.com/gavin-yao/p/13974294.html