src/Kernel.php
public function getContainerCacheFilename(): string
    {
        $environment = $this->getEnvironment();
        $appPath = $this->getAppPath();

        $filename = $this->getCachePath() . '/container_' . md5($environment . $appPath) . '.php';

        return $filename;
    }
public function getContainerCacheFilename(): string
    {
        $environment = $this->getEnvironment();
        $appPath = $this->getAppPath();

        $filename = $this->getCachePath() . '/container_' . md5($environment . $appPath) . '.php';

        return $filename;
    }
Returns container cache filename, e.g. /var/www/storage/cache/container_8a4ba7589ab6aba0b5.php

@return string