直接安装: sudo apt-get install docker-ce=18.03.0~ce-0~ubuntu 报错: E: Version '18.03.0~ce-0~ubuntu' for 'docker-ce' was not found 执行下面四条命令: sudo apt-get update sudo apt-get install apt-transport-https ca-certificates curl software-properties-common curl -fsSL https://download.docker.com/linux/ubuntu/gp