check php code for docker

[sinkcup]

some code in Laravel is not ready for docker, should check and change them.

config/logging.php

return [
    'channels' => [
        'stack' => [
            'driver' => 'stack',
            'channels' => preg_split('/,/', env('LOG_STACK_CHANNELS', 'stderr'), null, PREG_SPLIT_NO_EMPTY),
            'ignore_exceptions' => false,
        ],
];