What if your source system goes down, can't connect to your local machine, needs to use VM - no the oncall needs to have the USB stick or more, and use it any other company laptop.

Hackdoc itself has a mode to run from a local checkout, with no other service dependencies (vs. the production mode that expects a git/grpc proxy service to access the live repository), and as it's Go it can easily be moved around as a single, relocatable binary that will run from nearly all operating systems.