title: Push lando image to Github container repository
body: <p>Probably a stupid question (as usual ;-) ):</p>
  <p>I have a local lando installation for Drupal 9 and would like to publish the docker image to the GitHub Container Registry when pushing a new commit.</p>
  <p>The problem is that lando doesn't have a dockerfile in the repository ( think...)!
  How can I write a workflow for pushing an image if I don't have a dockerfile, or what's the most basic dockerfile I could use in that case?</p>
  <p>Thanks.</p>