Details in OpenWrt as Docker container host

opkg update
opkg install dockerd
opkg install docker
opkg install luci-app-dockerman

Details in #24927

for i in http_proxy https_proxy no_proxy; do
  uci set dockerd.proxies.$i="$(eval echo \$$i)"
done

uci add_list dockerd.globals.dns='172.17.0.1'
uci commit dockerd

service dockerd info
service dockerd restart
docker info
docker run --rm hello-world