Hi @prubin - thank you so much for your reply!
All good thoughts! I addressed each in a new topic just as you suggested 
(Error: Unhandled Exception: child_task=1435470582 child_task_status=failed: Error building image: Build exited with non-zero status: 1 Execution halted)
Wanted to reply to you to show my appreciation and include this link for record keeping/to help the next poor soul who runs in to this error and can't find an intuitive workaround.