checkDrupalVm:remote-host always fails

[danepowell]

My system information:

• BLT version: 8.9.0

I've set up a DrupalVM using the standard methods (blt vm). When I run blt doctor, checkDrupalVm:remote-host fails because the remote-host is not defined for the VM alias.

The reason is that BLT now runs commands inside the VM, and the Drush alias does not define a remote host when called within the VM: https://github.com/acquia/blt/blob/8.x/scripts/drupal-vm/drupal-vm.aliases.drushrc.php#L7

It seems like blt doctor should be executed outside of the VM, which would solve this problem.