Comment 13 for bug 1709164

FYI, while this is currently assigned to Seth, I do want to note that bubblewrap is setuid so it is going to require extra scrutiny (incidentally this was not called out in this bug's description). Regardless of the outcome of the bubblewrap review, the sandboxing feature is highly desirable so we'll be sure to outline a path forward so these thumbnailers can run in a restricted environment.