Get Docker Engine

1. Uninstall old versions

   yum remove docker 
                     docker-client 
                     docker-client-latest 
                     docker-common 
                     docker-latest 
                     docker-latest-logrotate 
                     docker-logrotate 
                     docker-engine

2. Install using the repository

   Install required packages.
   

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

   Use the following command to set up the stable repository.
   

   yum-config-manager 
       --add-repo 
       https://download.docker.com/linux/centos/docker-ce.repo

3. INSTALL DOCKER ENGINE - COMMUNITY

   Install the latest version of Docker Engine - Community and containerd.
   

   yum install docker-ce docker-ce-cli containerd.io

   To install a specific version of Docker Engine - Community, list the available versions in the repo, then select and install:
   

   yum list docker-ce --showduplicates | sort -r
   
   yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io

   Start Docker.
   

   systemctl start docker

   Verify that Docker Engine - Community is installed correctly by running the hello-world image.
   

   docker run hello-world

   　　

4. Install from a package

   Go to https://download.docker.com/ and download the .rpm file for the Docker version you want to install.
   

    #!

   Install Docker Engine - Community
   

   yum install /path/to/package.rpm

   Start Docker.
   Verify that Docker Engine - Community is installed correctly by running the hello-world image.
   

   systemctl start docker
   
   docker run hello-world

5. Install using the convenience script

   This example uses the script at get.docker.com to install the latest release of Docker Engine - Community on Linux. To install the latest testing version, use test.docker.com instead. In each of the commands below, replace each occurrence of get with test.
   

   curl -fsSL https://get.docker.com -o get-docker.sh
   
   sh get-docker.sh
   
   #非 root 操作
   usermod -aG docker your-user

6. Uninstall Docker Engine - Community

   # Uninstall the Docker package:
   yum remove docker-ce
   
   # Images, containers, volumes, or customized configuration files on 
   #your host are not automatically removed. To delete all images, 
   #containers, and volumes:
   rm -rf /var/lib/docker

    

7. Install Docker Engine - Community from binaries

   1. Download the static binary archive. Go to https://download.docker.com/linux/static/stable/ (or change stable to nightly or test), choose your hardware platform, and download the .tgz file relating to the version of Docker Engine - Community you want to install.　　
   2. Extract the archive using the tar utility. The dockerd and docker binaries are extracted.
   3. Optional: Move the binaries to a directory on your executable path, such as /usr/bin/. If you skip this step, you must provide the path to the executable when you invoke docker or dockerd commands.
   4. Start the Docker daemon:

      ./dockerd &

   5. Daemon configuration file (default "/etc/docker/daemon.json")
      Location of client config files (default "/root/.docker")

dockerd &