title: Added SSH key to Gitlab but it still asks for my credentials
body: <p>GitLab's HTTP pull &amp; push are working when I enter my credentials. </p>
  
  <p>But when using an added SSH key, it is always is asking for my password, which I don't know. Why is GitLab doing this? Is it a server fault?</p>
  
  <p>And when calling <code>ssh -vT git@git.com</code> there is an error:</p>
  
  <blockquote>
    <p>Permission denied (publickey)</p>
  </blockquote>
  
  <p>I've tried everything, even re-installing Git, but nothing works. Even their own solution is not working, as described here: <a href="https://help.github.com/articles/error-permission-denied-publickey/" rel="noreferrer">https://help.github.com/articles/error-permission-denied-publickey/</a></p>