Use dumb-init to fix PHP-FPM PID 1 issues

[wernight]

PHP-FPM probably spawns processes. Unless it reaps processes in all cases, it'd be useful to use dumb-init to fix those issues. It's meant for Docker and works also on Alpine.

Just need 2 lines to add it, then change entrypoint from:

ENTRYPOINT ["/entrypoint.sh"]

to:

ENTRYPOINT ["dumb-init", "/entrypoint.sh"]

[yosifkit]

This is unneeded; PHP fpm is designed to properly reap its children: php source fpm_children.c.

[wernight]

Thanks 👍