This is a Dockerfile setup for HDhomerun DVR - https://forum.silicondust.com/forum/viewtopic.php?f=126&t=20613
HDhomerun DVR Server: 20180419
To update the firmware install the Windows or Mac install and when asked to install the server, select don't.
Then you will get a prompt to configure the tuner after Setup is complete.
The re-setup the tuner, which will update the firmware and you may have to re-scan channels.
Then check for Docker updates.
After install go to:
Your Kodi Client