PHP can not resolve mysql container name under certain circumstances

Question

I have legacy PHP application. It used mysqli to make mysql things. So in config I have DSN string to connect to mysql service. Like that

mysql://username:pass

Answer 1

docker-compose rm -v use and delete MySQL volume.

Volumes:

• ./docker/mysql:/var/lib/mysql -> pathmysql
• /etc/timezone:/etc/timezone:ro
• /etc/localtime:/etc/localtime:ro