[Unit]
Description:Docker Application Container Engine
Documentation=URL
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket
[Service]
Type=notify
Environment="HTTPS_PROXY=http://www.ik8s.io:10080"
Environment="NO_PROXY=127.0.0.1/8,172.20.0.0/16"
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock -H tcp://0.0.0.0:2375
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TimeoutSec=0
Restart=on-failure|always
RestartSec=2
[Install]
WantedBy=multi-user.target
原文：https://www.cnblogs.com/dissipate/p/13189428.html