docker安裝：

????1下載：

????????https://get.docker.com/builds/Linux/x86_64/docker-1.12.3.tgz

????2解壓并查看docker版本：

????????補(bǔ)充： --strip-components N? ?去除N層目錄結(jié)構(gòu)? ?-C指定解壓位置?

????3 在防火墻上打開docker對應(yīng)端口，（明哥不確定這一步需不需要，這里先略過嗡贺。后面我還會再回來的）

????4啟動docker

????5這里需要有一個(gè)開機(jī)自啟動的腳本（這個(gè)shell腳本是我復(fù)制過來的，實(shí)際上只運(yùn)行到第四步即可）

????????1編寫開機(jī)啟動腳本

????????????vi /usr/lib/systemd/system/docker.service

????????????????[Unit]

????????????????Description=Docker Application Container Engine

????????????????Documentation=https://docs.docker.com

????????????????After=network.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/local/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

????????????????[Install]

????????????????WantedBy=multi-user.target

????????2設(shè)置開機(jī)啟動

????????????????systemctl enable docker.service

????????3重啟服務(wù)器

? ? ? ? ? ? ? ? reboot