Need help to geet Soft Ether VPN Client working

Hi, im running Docker as CoreElec (Kodi) Addon. On an ARM64 armel CPU.
I want simply connect to my vpn Server via its Soft Ethers own protocoll. It MUST be an Soft Ether Client like “dquintela/softether-vpnclient-armel”

Im a absolutely newbie at docker. Please can someone help me to set the connection up.
I have SSH access and can run “docker pull dquintela/softether-vpnclient-armel” successfully
But i dont know the next Steps to configure and set up the connection.

Answers can be in german too

pls someone help me get this worked