Update docker-compose.yml

added custom.my.cnf to mysql volumes

Author: andrzejenne

docker-compose.yml

@@ -78,6 +78,7 @@ services:
     platform: linux/amd64
     volumes:
       - mysql:/var/lib/mysql
+      - ./images/mysql/custom.my.cnf:/etc/mysql/conf.d/custom.my.cnf
 
   adminer:
     build: