title: Laravel Storage::disk('local')->put creates a file outside the project file
body: <p>I am running my project with docker.
  I am using the function </p>
  
  <pre><code>   Storage::disk('local')-&gt;put("/algorithms/".$this-&gt;algorithm_id."/newfile.csv", $csv_newfile-&gt;__toString());
  </code></pre>
  
  <p>I want to store this file as <code>var/www/html/Laravel/resources/app/algorithms/algorithm_id/newfile</code>
  But it stores it one directory up from project folder.
  So
  My project sits in 
  <code>/var/www/html/Laravel</code>
  But it creates this file in <code>/var/www/html/algorithms/algorithm_id/newfile</code> 
  I probably have set up the the projects root directory in <code>/var/www/html</code> (?) But I can't find where have I done this.
  Could someone explain what could be the problem?</p>
  
  <p>Here's my /config/filesystems.php file</p>
  
  <pre><code>&lt;?php
  </code></pre>
  
  <p>return [</p>
  
  <pre><code>/*
  |--------------------------------------------------------------------------
  | Default Filesystem Disk
  |--------------------------------------------------------------------------
  |
  | Here you may specify the default filesystem disk that should be used
  | by the framework. The "local" disk, as well as a variety of cloud
  | based disks are available to your application. Just store away!
  |
  */
  
  'default' =&gt; env('FILESYSTEM_DRIVER', 'local'),
  
  /*
  |--------------------------------------------------------------------------
  | Default Cloud Filesystem Disk
  |--------------------------------------------------------------------------
  |
  | Many applications store files both locally and in the cloud. For this
  | reason, you may specify a default "cloud" driver here. This driver
  | will be bound as the Cloud disk implementation in the container.
  |
  */
  
  'cloud' =&gt; env('FILESYSTEM_CLOUD', 's3'),
  
  /*
  |--------------------------------------------------------------------------
  | Filesystem Disks
  |--------------------------------------------------------------------------
  |
  | Here you may configure as many filesystem "disks" as you wish, and you
  | may even configure multiple disks of the same driver. Defaults have
  | been setup for each driver as an example of the required options.
  |
  | Supported Drivers: "local", "ftp", "s3", "rackspace"
  |
  */
  
  'disks' =&gt; [
  
      'local' =&gt; [
          'driver' =&gt; 'local',
          'root' =&gt; storage_path('app'),
      ],
  
      'public' =&gt; [
          'driver' =&gt; 'local',
          'root' =&gt; storage_path('app/public'),
          'url' =&gt; env('APP_URL').'/storage',
          'visibility' =&gt; 'public',
      ],
  
      's3' =&gt; [
          'driver' =&gt; 's3',
          'key' =&gt; env('AWS_ACCESS_KEY_ID'),
          'secret' =&gt; env('AWS_SECRET_ACCESS_KEY'),
          'region' =&gt; env('AWS_DEFAULT_REGION'),
          'bucket' =&gt; env('AWS_BUCKET'),
      ],
  
  ],
  </code></pre>
  
  <p>];</p>