docker离线安装手册

docker 下载链接：
https://download.docker.com/linux/static/stable/x86_64/

解压：

tar xf docker-20.10.9.tgz

拷贝命令到指定目录：

cp -a * /usr/bin/

编写docker配置:

mkdir /etc/docker
cat << 'EOF' > /etc/docker/daemon.json、

{
    "log-driver": "json-file",
    "data-root": "/data/docker",
    "log-opts": {
      "max-size": "100m",
      "max-file": "3"
     },
     "exec-opts": ["native.cgroupdriver=systemd"],
     "storage-driver": "overlay2",
     "storage-opts": [
        "overlay2.override_kernel_check=true"
     ],
     "insecure-registries": [
       "192.168.1.200:80"
     ],
     "registry-mirrors": [
       "https://docker.mirrors.ustc.edu.cn",
       "https://hub-mirror.c.163.com"
     ]
}
EOF

添加启动脚本：

cat << EOF > /usr/lib/systemd/system/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
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# 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

# Comment TasksMax if your systemd version does not support it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# 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
OOMScoreAdjust=-500

[Install]
WantedBy=multi-user.target
EOF

启动docker：
systemctl daemon-reload
systemctl enable docker # 开机启动docker
systemctl start docker # 启动docker服务

查看docker是否安装成功：
docker info