docker之Hello-world
**在centos上安装docker**
cat /etc/redhat-release
-- uname -r : 显示操作系统的发行版号 -- uname -a :显示系统名、节点名称、操作系统的发行版号、内核版本等等。
uname -r
1.卸载老版本
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
2.下载依赖
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
3.配置加速器
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://al3b5z91.mirror.aliyuncs.com"]
}
EOF
4.开始安装
sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
5.启动docker
sudo systemctl start docker
6.设置开机启动
sudo systemctl enable docker
7.验证是否安装成功
sudo docker run hello-world
参考官方文档:https://docs.docker.com/engine/install/centos/