title: accessing X Display from a docker container, running on ubuntu VM, running on windows 10
body: <p>I am faithfully trying to replicate <a href="https://github.com/ros-visualization/executive_smach_visualization/issues/34#issuecomment-870147946" rel="nofollow noreferrer">this solution</a> to a versioning issue I have encountered while trying to run a ROS program. <br />
  The solution requires running a different ros version in a docker container and accessing the X Display to output results. When trying to run, the output is: <code>Unable to access the X Display, is $DISPLAY set properly?</code>. I have tried <code>echo $DISPLAY</code> on both the docker container and the linux VM on which it is running, and they both point to <code>:0</code> (which should be correct).</p>
  <p>I suspect that the issue stems from me running ubuntu 20.04 on VMware on Windows 10, rather than natively. <br />
  Does anyone know if my hunch is correct and if there are workarounds?</p>
  <p>Thanks</p>