crontab via a docker container

Hello,

I have a Laravel / VueJS application in a docker container.

I need to run cron jobs, so I have created another container with Alpine.

FROM alpine:3.20.1

COPY cron/crontab /etc/crontabs/root

RUN crontab /etc/crontab
RUN mkdir -p /var/log/cron

CMD ["/usr/sbin/crond", "-f"]

cron:
  build:
    context: .
    dockerfile: cron.dockerfile
  container_name: my-cron-container
  volumes:
    - ./src:/var/www/html
  depends_on:
    php:
      condition: service_started
    soketi:
      condition: service_healthy
    vendor:
      condition: service_started
  restart: always

// And here is my crontab content

* * * * * cd /var/www/html && php /var/www/html/artisan schedule:run >> /dev/null 2>&1

When I do docker-compose run cron sh, I see the crond in action.

crond[11]: USER root pid  16 cmd cd /var/www/html && php /var/www/html/artisan schedule:run >> /dev/null 2>&1
crond[11]: USER root pid  17 cmd cd /var/www/html && php /var/www/html/artisan schedule:run >> /dev/null 2>&1
crond[11]: USER root pid  18 cmd cd /var/www/html && php /var/www/html/artisan schedule:run >> /dev/null 2>&1
crond[11]: USER root pid  19 cmd cd /var/www/html && php /var/www/html/artisan schedule:run >> /dev/null 2>&1
crond[11]: USER root pid  20 cmd cd /var/www/html && php /var/www/html/artisan schedule:run >> /dev/null 2>&1

But sure it doesn't execute php /var/www/html/artisan schedule:run. Why ?

If I run php -v from the shell, php is not found. php is in another container, but it should work, no ?

Why does my code not work ?

Can you help me please ?

Thanks a lot.

Vincent