Do not rely on SIGINT handler, use own handler instead
Do not rely on SIGINT handler, use own handler instead

In some scenarios (e.g. our internal build server), the handler for SIGINT
is signal.SIG_IGN, i.e. the signal is ignored. In this case, the daemon will
not stop and the init script will eventually send SIGKILL, which prevents
a clean shutdown.

ImmobilienScout24/succubus