Update on extracting clips from Canon DC50 camcorder DVDs

In a previous post I described the problem I was trying to solve. 

Long story short, I've solved the issue of the missing first menu page of clips by altering the subtitleripper tool, and wrapped the solution up into a docker container (because containers are the dog's pyjamas). 

It will be interesting to see if anyone finds it and finds it useful.

I emailed the author of the subtitleripper package about the issue I had, but have not received any response.