REBELinBLUE\Deployer\Scripts\Runner::prependScript PHP Метод

    public function prependScript($script)
    {
        $this->script = trim($script . PHP_EOL . $this->script);
        return $this;
    }

 /**
  * Gets the process which is used for the supplied step.
  *
  * @param DeployStep $step
  * @param array $tokens
  *
  * @return Process
  */
 private function getScriptForStep(DeployStep $step, array $tokens = [])
 {
     switch ($step->stage) {
         case Stage::DO_CLONE:
             return new Process('deploy.steps.CreateNewRelease', $tokens);
         case Stage::DO_INSTALL:
             // Write configuration file to release dir, symlink shared files and run composer
             $process = new Process('deploy.steps.InstallComposerDependencies', $tokens);
             $process->prependScript($this->configurationFileCommands($tokens['release_path']))->appendScript($this->shareFileCommands($tokens['release_path'], $tokens['shared_path']));
             return $process;
         case Stage::DO_ACTIVATE:
             return new Process('deploy.steps.ActivateNewRelease', $tokens);
         case Stage::DO_PURGE:
             return new Process('deploy.steps.PurgeOldReleases', $tokens);
     }
     // Custom step
     return new Process($step->command->script, $tokens, Process::DIRECT_INPUT);
 }