fpm didn't emit worker.php

[gai00]

env: docker php7.3:fpm
code: all copy from README
fpm log: "POST " 200

I think path is correct, (or not ... path is empty)
volume: /home/ubuntu/labs/queue:/app
but I don't know why worker.php not working.

php-fpm.conf -> log_level: debug

10.0.17.4 -  09/Apr/2019:10:11:54 +0000 "GET /sender.php" 200
[09-Apr-2019 10:11:54.389192] DEBUG: pid 1, fpm_event_loop(), line 417: event module triggered 1 events
[09-Apr-2019 10:11:54.391732] DEBUG: pid 1, fpm_event_loop(), line 417: event module triggered 1 events
10.0.17.4 -  09/Apr/2019:10:11:54 +0000 "POST " 200
[09-Apr-2019 10:11:55.003241] DEBUG: pid 1, fpm_pctl_perform_idle_server_maintenance(), line 377: [pool www] currently 0 active children, 2 spare children, 2 running children. Spawning rate 1