title: How to create circle container with border in flutter?
body: <p>As you can notice, the background color of the decoration is slightly overflowing the circular border. I've tried in different ways (e.g. using ClipOval) but the result is always the same.</p>
  <p><a href="https://i.stack.imgur.com/4a3nl.png" rel="noreferrer"><img src="https://i.stack.imgur.com/4a3nl.png" alt="enter image description here" /></a></p>