NX Witness server on an i-PRO camera

Hi

I wanted to try out NX Witness Edge on an i-PRO WV-X15500-V3L, and I found a description and a download-file for Docker at their website. ( https://i-pro.com/products_and_solutions/en/surveillance/products/nx-vms-server )
However I also need the NX-server.ext so I can test this out. i-PRO use the Ambrella-processor, so no ordinary docker will work. Is there any chance that someone know where to obtain this?