title: how to trigger gitlab pipeline by tags
body: <p>How to trigger a GitLab CICD pipeline whenever a tag like below gets created? How can I make it in regular expression for all future tags based on the same format?</p>
  <p>Tag to trigger the pipeline: <code>2021.08.31.DEVRELEASE.0001</code></p>
  <p>Where <code>DEVRELEASE</code> is the static keyword, rest of the keywords would change.</p>