Coelacanthus

Docker will set the default behavior of FORWARD chain to DROP, and then this make the home network of my friend off from the internet completely…

https://docs.docker.com/engine/network/packet-filtering-firewalls/#docker-on-a-router

So use Fcitx 5 Android instead. It’s a open source IME application without requesting any permission except Notification, especially without network permission.

https://github.com/fcitx5-android/fcitx5-android