https://docs.docker.com/compose/gettingstarted/  

1.根據機器架構下載 [centos@centos7 ~]$ uname -s Linux 主機名 uname -n [centos@centos7 ~]$ uname -m x86_64   https://github.com/docker/compose/releases/   2.授權 sudo chmod +x /usr/local/bin/docker-compose   運行 docker-compose --version   3.安装 Docker CE # 安装工具包从而可以让我们在 yum 中添加别的仓储源 sudo yum install -y yum-utils \ device-mapper-persistent-data \ lvm2 # 设置 docker ce 的稳定库地址 sudo yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo # 安装 docker ce sudo yum install docker-ce docker-ce-cli containerd.io   4.運行 Docker [centos@centos7 usr]$ /usr/bin/docker -v Docker version 20.10.8, build 3967b7d [centos@centos7 ~]$ docker info Docker Root Dir: /var/lib/docker   5.启动 docker systemctl start docker # 启动 Docker 服务并允许开机自启 sudo systemctl start docker # 查看当前 dokcer 的运行情况 sudo systemctl status docker 將用戶加入docker組 查看/var/run/docker.sock權限 ps -l 將用戶加入docker組 sudo gpasswd -a centos docker 更新docker組 newgrp docker docker ps #测试docker命令是否可以使用sudo正常使用 docker version docker info   6.運行 [centos@centos7 run]$ docker run hello-world docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?. service docker restart 查看docker狀態 systemctl status docker   7.daemon配置文件 sudo chmod +777 /etc/docker/daemon.json sudo chmod +777 -R /var/lib/docker cat /etc/docker/daemon.json   8.docker run python docker run -it python:3.7 bash   9.Clean up space used by Docker docker system prune -a docker volumes prune