Processes don't always exit on Ctrl-C (SIGINT)

[sbleon]

Thanks for the great software!

For some reason, the processes don't always get signaled to exit when I press Ctrl-C.

When things work correctly, the output looks like this:

11:51:55 AM docker.1  |  mailhog-1   | [APIv1] KEEPALIVE /api/v1/events
11:52:55 AM docker.1  |  mailhog-1   | [APIv1] KEEPALIVE /api/v1/events
^C[WARN] Interrupted by User
[DONE] Killing all processes with signal  SIGINT
11:53:42 AM docker.1  |  Gracefully stopping... (press Ctrl+C again to force)
11:53:42 AM webpack.1 |  <i> [webpack-dev-server] Gracefully shutting down. To force exit, press ^C again. Please wait...
11:53:42 AM docker.1  |  Container mailhog-1  Stopping
11:53:42 AM docker.1  |  Container postgres-1  Stopping
11:53:42 AM docker.1  |  Container cf-1  Stopping
11:53:42 AM sass.1    Exited with exit code SIGINT
11:53:42 AM cfformat.1 |  Stopping...
11:53:42 AM webpack.1 Exited Successfully
11:53:42 AM docker.1  |  Container mailhog-1  Stopped
11:53:42 AM docker.1  |  Container postgres-1  Stopped
11:53:44 AM cfformat.1 Exited with exit code null
11:53:53 AM docker.1  |  Container cf-1  Stopped
11:53:53 AM docker.1  |  Container httpd-1  Stopping
11:53:54 AM docker.1  |  canceled
11:53:54 AM docker.1  Exited with exit code null

When things don't work correctly, I see something like this:

12:09:04 PM docker.1  |  cf-1        | [INFO ] runwar.server: ******************************************************************************
12:09:04 PM docker.1  |  cf-1        | [INFO ] runwar.server: Server is up - http-port:8080 stop-port:35709 PID:140 version 4.5.2
^C

and I'm right back to my prompt.

I have not been able to identify any pattern around this behavior, but I've seen it happen in multiple applications that use nf.