title: Image:make(path) Image source not readable when i use artisan custom command
body: <p>i hope you can help me with my problem.</p>
  
  <p>I have a Laravel application and i wanna optimize all my images. </p>
  
  <p>I use a controller for that, but i have a lot of images, and i get execution_maxim_time_exceed.</p>
  
  <p>I think, the best way to do that is to creat an artisan command. </p>
  
  <p>So, i creat my with <code>php artisan make:command Name command:example</code>.</p>
  
  <p>After, I move my code from controller to handle() from artisan command. </p>
  
  <p>I can use <code>Storage:move($oldPath, $newPath)</code>, but i can't use <code>Image:make($filePath).</code></p>
  
  <p>My file storage is "<code>storage/app/images/image.png</code>" and filePath is '<code>images/image.png</code>'</p>
  
  <p>When i use the controller, the method <code>isFilePath()</code> from <code>Intervention\Image\AbstractDecoder</code> return true, but in artisan command return false.</p>
  
  <p>Method <code>isFilePath()</code> call the function <code>is_file()</code> </p>
  
  <pre><code>    public function isFilePath()
      {
          if (is_string($this-&gt;data)) {
              try {
                  return is_file($this-&gt;data);
              } catch (\Exception $e) {
                  return false;
              }
          }
  
          return false;
      }
  </code></pre>
  
  <p>Why i get false from the function is_file() with the same path for file in artisan command, and in controller i get true? (for the same path). </p>
  
  <p>Thanks</p>