I am trying to debug a WolfiOS docker image with an Laravel app.

php artisan does not print out anything (normally it would display the usage help)

/var/www/html # php -d "display_errors=On" -d "display_startup_errors=On" artisan
/var/www/html # 

In my INI, display_errors is currently off, that is why I am activating it via -d and it the setting’s a picked up:

/var/www/html # php -d "display_errors=On" -d "display_startup_errors=On" -i |grep error
display_errors => STDOUT => STDOUT
display_startup_errors => On => On
error_append_string => no value => no value
error_log => /var/log/php_error.log => /var/log/php_error.log
error_prepend_string => no value => no value
error_reporting => E_ALL => E_ALL
html_errors => Off => Off
ignore_repeated_errors => Off => Off
log_errors => On => On
xmlrpc_error_number => 0 => 0
xmlrpc_errors => Off => Off
intl.error_level => 0 => 0

So even when I tried enabling error reporting, nothing is printed.

What can be the cause?
I would expect an error to be printed, if something went wrong.