My container failed to build with the extra parameters in the config. i removed them, and the build completed.
However, I tried using the program, and after getting it all set up/configured, and started it on extracting an MKV from an iso file, as soon as I confirmed I wanted it to create the directory into which it would save the file, my windows VM crashed, and the mkv file never actually started extracting. it eventually failed in the makemkv docker also.
Sadly, it seems it's still not quite working right
How is your setup of the VM and the docker? Volume mappings and such.
I have had no problem using MakeMKV while using my Windows 8.1 VM on my "desktop" unraid. On my server I have a Ubuntu tvheadend VM running at the same time as using MakeMKV also.
I tried to use an ISO as source and no problems here.
Could it be you are running out of memory?
Logs would be nice to see