| 安装前将所有的软件包上传到系统的/opt路径，所有的操作都在/opt目录下
一、解压文件tar -xzvf docker-19.03.0.tgz
二、拷贝解压后的文件到/usr/bin/下面
三、加入系统文件cat >/etc/systemd/system/docker.service <<-EOF[Unit]Description=Docker Application Container EngineAfter=network-online.target firewalld.serviceWants=network-online.target[Service]Type=notify# the default is not to use systemd for cgroups because the delegate issues still# exists and systemd currently does not support the cgroup feature set required# for containers run by dockerExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sockExecReload=/bin/kill -s HUP $MAINPID# Having non-zero Limit*s causes performance problems due to accounting overhead# in the kernel. We recommend using cgroups to do container-local accounting.LimitNOFILE=infinityLimitNPROC=infinityLimitCORE=infinity# Uncomment TasksMax if your systemd version supports it.# Only systemd 226 and above support this version.#TasksMax=infinityTimeoutStartSec=0# set delegate yes so that systemd does not reset the cgroups of docker containersDelegate=yes# kill only the docker process, not all processes in the cgroupKillMode=process# restart the docker process if it exits prematurelyRestart=on-failureStartLimitBurst=3StartLimitInterval=60s[Install]WantedBy=multi-user.targetEOF
四、启动Dockersystemctl daemon-reload && systemctl start docker && systemctl enable docker.service
五、Docker配置文件编辑daemon.json文件输入以下内容 vim /etc/docker/daemon.json { "log-driver":"json-file", "log-opts":{ "max-size" :"10m","max-file":"4" }, "registry-mirrors": ["https://6kx4zyno.mirror.aliyuncs.com"]}
六、重启Docker
七、检查Docker是否安装成功
八、总结我们已经向你展示如何在 Ubuntu 20.04 机器上安装 Docker。 想要学习更多关于 Docker 的信息，查阅官方 Docker 文档。
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