离线安装docker（已验证）_18.06.3-ce

1. 下载docker镜像
   https://download.docker.com/linux/static/stable/x86_64/
2. 解压文件
   tar -xf docker-18.06.3-ce.tgz
3. 将文件拷贝到/usr/bin
   sudo cp docker/* /usr/bin/
4. 配置docker
   vim /etc/systemd/system/docker.service

docker.service
 
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=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 docker
ExecStart=/usr/bin/dockerd
ExecReload=/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=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
 
[Install]
WantedBy=multi-user.target
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5. 启动docker前配置（报错Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?的解决方案也是后面两条）
   sudo chmod +x /etc/systemd/system/docker.service
   sudo systemctl daemon-reload
   sudo systemctl start docker

6. 调用docker加载image
   sudo docker load -i image_1.tar

7. nvidia-docker离线安装
   请参考“https://blog.csdn.net/chenmaolin88/article/details/86242997”
   下载安装：
   apt download libnvidia-container1
   apt download libnvidia-container-tools
   apt download nvidia-container-toolkit
   apt download nvidia-container-runtime
   apt download nvidia-docker2

需要另外下载一个
apt download nvidia-container-toolkit
且其与“apt download nvidia-container-runtime-hook”冲突，所以只需要下载toolkit；
安装完之后就可以使用nvidia-docker了。
***tips:***可以通过断开网络，下载，可以看到下载的路径，从而更换下载的内容。