I tried both approaches detailed here with an image hosted on gdrive here - https://drive.google.com/open?id=0By8eK3-QyZJwTDliUHZJeWZJN00 at the bottom of this support article - https://finario.tenderapp.com/kb/general/login-password-out-of-office
but can't get the image to display with either approach.

It's not a permission issue as the file is set to public view and can be seen if one posts the link directly into the browser