For some reason I'd change Docker Quickstart Terminal to Mac default Terminal instead of iTem. But it failed at first tries, even by uninstalling docker from Mac system.
Searching such config file by name "default_terminal", there is a text file to record this option. Removing this file and relaunch docker, or, just edit it directly will close this issue.
ⓑ maxwu 16:32 ~ devel circleci-stat master sudo find / -name default_terminal