Based on the comment by Nikola Kovacson on the duplicate bug 1547860 (https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1547860/comments/4), this attachment works (but is a hack):
Based on the comment by Nikola Kovacson on the duplicate bug 1547860 (https:/ /bugs.launchpad .net/ubuntu/ +source/ ubiquity/ +bug/1547860/ comments/ 4), this attachment works (but is a hack):