There are 3 param to set:
SERVER
the address of the nps server
VKEY
the console you apply from nps console
TYPE
tcp/udp (default is tcp)
You can run quickly run below:
docker run -d --restart=always --net=host -e SERVER=your.server.com:port -e VKEY=yourKey -e TYPE=tcp 510mt/nps-client:latest