Dockerfile 시행착오 - 2

"Can't connect to MySQL while building docker-compose image"

또는

django.db.utils.OperationalError: (2002, "Can't connect to MySQL server on '127.0.0.1' (115)")

에러 발생시,

DATABASE (settings.py) 설정값 조정할 것.

출처: https://stackoverflow.com/questions/57407940/cant-connect-to-mysql-while-building-docker-compose-image