centos7安装docker

一、Install using the repository

1. Install required packages. yum-utils provides the yum-config-manager utility, and device-mapper-persistent-data and lvm2 are required by the devicemapper storage driver.

     yum install -y yum-utils device-mapper-persistent-data lvm2

2.Use the following command to set up the stable repository. You always need the stable repository, even if you want to install builds from the edge or test repositories as well.

   yum-config-manager \

--add-repo \

  https://download.docker.com/linux/centos/docker-ce.repo

二、INSTALL DOCKER CE

1.Update the yum package index.

   $ sudo yum makecache fast

2.Install the latest version of Docker CE, or go to the next step to install a specific version.

   $ sudo yum install docker-ce

三、INSTALL DOCKER CE

1.Update the yum package index.

   $ sudo yum makecache fast

2.Install the latest version of Docker CE, or go to the next step to install a specific version.

   $ sudo yum install docker-ce

3. Start Docker.

   $ sudo systemctl start docker

4.Verify that docker is installed correctly by running the hello-world image.

   $ sudo docker run hello-world