Vagrant Linux CentOS7 安装Docker
参考官方文档：https://docs.docker.com/engine/install/centos/#install-using-the-repository
Uninstall old versions
Older versions of Docker were called docker or docker-engine. If these are installed, uninstall them, along with associated dependencies.
删除老版本
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
Set up the repository
设置仓库
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
Install Docker Engine
安装最新版本Docker
Install the latest version of Docker Engine and containerd, or go to the next step to install a specific version:
sudo yum install docker-ce docker-ce-cli containerd.io
Start Docker.
运行Docker
sudo systemctl start docker
Verify that Docker Engine is installed correctly by running the hello-world image.
查看是否正确安装
sudo docker run hello-world
docker自动启动设置：
systemctl enable docker.service