linux 安装docker
参考的资料:https://docs.docker.com/engine/install/centos/
sudo yum install -y yum-utils
sudo yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo
sudo yum-config-manager --enable docker-ce-nightly
sudo yum install docker-ce docker-ce-cli containerd.io
sudo systemctl start docker
sudo docker run hello-world