docker常用daemon配置；/etc/docker/daemon.json

{
"data-root": "/var/lib/docker",
"exec-opts": ["native.cgroupdriver=systemd"],
"registry-mirrors": [
"https://docker.mirrors.ustc.edu.cn",
"http://hub-mirror.c.163.com"
],
"insecure-registries": ["192.168.0.74"],
"max-concurrent-downloads": 10,
"live-restore": true,
"log-driver": "json-file",
"log-level": "warn",
"log-opts": {
"max-size": "50m",
"max-file": "1"
},
"storage-driver": "overlay2"
}