CentOS7安装docker

卸载旧版本

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

安装配置相关依赖

sudo yum install -y yum-utils

sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/CentOS7/docker-ce.repo

如果你的服务器连接官网超时，可换为阿里云的

sudo yum-config-manager \
    --add-repo \
    http://mirrors.aliyun.com/docker-ce/linux/CentOS7/docker-ce.repo

安装docker引擎

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

启动docker

sudo systemctl start docker

设置开机自启动

sudo systemctl enable docker

验证是否正确安装

sudo docker run hello-world

配置阿里云镜像加速

sudo mkdir -p /etc/docker

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://9w9zqgnf.mirror.aliyuncs.com"]
}
EOF

sudo systemctl daemon-reload

sudo systemctl restart docker