目录1 安装docker2 启动docker3 测试docker4 关闭docker1 安装docker步骤1卸载旧版本如果有sudoaptremovedockerdocker-engine docker.io containerd runc即使提示没有安装也没有关系。步骤2更新软件包并安装一些依赖sudoaptupdatesudoaptinstall-yca-certificatescurlgnupg步骤3添加docker官方gpg key创建密钥目录sudoinstall-m0755-d/etc/apt/keyrings下载密钥curl-fsSLhttps://download.docker.com/linux/ubuntu/gpg|\sudogpg--dearmor-o/etc/apt/keyrings/docker.gpg修改权限sudochmodar /etc/apt/keyrings/docker.gpg步骤4添加docker软件源echo\deb [arch$(dpkg --print-architecture)\ signed-by/etc/apt/keyrings/docker.gpg] \ https://download.docker.com/linux/ubuntu \$(./etc/os-releaseecho$VERSION_CODENAME)stable|\sudotee/etc/apt/sources.list.d/docker.list/dev/null更新软件源sudoaptupdate步骤5安装dockersudoaptinstall-y\docker-ce\docker-ce-cli\containerd.io\docker-buildx-plugin\docker-compose-plugin安装完成后查看版本docker--version输出大概如下Docker version 29.6.1, build 8900f1d2 启动docker手动执行sudosystemctlenabledockersudosystemctl startdocker查看状态systemctl statusdocker看到输出Active: active (running)就说明已经启动成功了。3 测试docker执行sudodockerrun hello-world如果输出中有Hello from Docker!说明安装成功了。4 关闭dockersudosystemctl stopdocker