zerotier on qnap simple

hi this is simpler and better and works
use docker first install QVPN for the tun driver

docker run -d --name zerotier-one --device=/dev/net/tun --net=host --cap-add=NET_ADMIN --cap-add=SYS_ADMIN -v $HOME/docker/zerotier-one:/var/lib/zerotier-one --restart=always zyclonite/zerotier

docker exec zerotier-one zerotier-cli join 8056c2e21c000001

or create an empty file with the network as name
/var/lib/zerotier-one/networks.d/8056c2e21c000001.conf