title: How to select the GnuPG key that the maven-gpg-plugin uses to sign artifacts?
body: <p>I am using the maven-gpg-plugin to sign the maven artifacts. This works fine, but I have several keys in my GnuPG keyring and want to use a different one than the one GnuPG selects.</p>
  
  <ol>
  <li><p>How does GnuPG select the "default" key if there are several ones?</p></li>
  <li><p>Is there a possibility to specify the key to be used in the maven-gpg-plugin configuration? It seems that <code>keyname</code> doesn't work (I assume it selects the keyring, but not a specific key).</p></li>
  </ol>