CentOS安装Docker并设置开机启动

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  1. 删除旧版
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sudo yum remove docker docker-common  docker-selinux  docker-engine
  1. 安装库
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sudo yum install -y yum-utils  device-mapper-persistent-data  lvm2
  1. 配置stable repo
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sudo yum-config-manager --add-repo  https://download.docker.com/linux/centos/docker-ce.repo
  1. 安装
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sudo yum install docker-ce
  1. 启动
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sudo systemctl start docker
  1. 开机启动
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sudo systemctl enable docker

7 . hello world

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sudo docker run hello-world