title: Gitignore doesn't ignore a specific folder
body: <p>I have add this files into my gitignore file </p>
  
  <pre><code>public/file/*
  </code></pre>
  
  <p>and when I did git status, I still see </p>
  
  <pre><code>new file:   public/file/external/description.txt
  new file:   public/file/external/header.txt
  </code></pre>
  
  <p>How do I make everything inside my <code>public/file/</code> ignore by git ?
  How do stop that ? </p>
  
  <p>Do I need to clear any caches ? </p>