This ruby script automatically invokes the MakeMKV command-line app when a Blu-ray disc is inserted to your computer. When MakeMKV is finished with the disc, it is ejected. This makes it very convenient for use with multiple-disc sets.
The script currently only supports macOS. It can be started from the Terminal app, and left running in the background.
You can set the OUTPUT_PATH near the top of the script to something appropriate for your system.