Trap the sigterm during the stop of a container

Hi,

I would like to know if with dumb-init it's possible to trap the sigkill to be able to do something else during the stop of the container ?

I used keepalived and two process was created but the second one doesn't have the pid 1 for parent so it's not killed correctly.

root 7711 1 0 18:15 ? 00:00:00 keepalived -P xxx root 7714 7711 0 18:15 ? 00:00:00 keepalived -P xxx

Regards,