Yep, I wrote a container system similar to docker (also in perl) and had to make sure I had signal handlers setup properly for PID 1 so that weird things didn't

Yep, I wrote a container system similar to docker (also in perl) and had to make sure I had signal handlers setup properly for PID 1 so that weird things didn't happen when it execs to another process or fails during that. Not too difficult to do, but if you're doing docker then dumb-init is probably the better option than adding some boiler plate to everything you're going to make.