changed timezone

docker-compose.yml

@@ -46,8 +46,10 @@ services:
     environment:
       MYSQL_ROOT_PASSWORD: ${DB_PASSWORD}
       MYSQL_DATABASE: borrow_system
+      TZ: Europe/Berlin
     volumes:
       - mysql-data:/var/lib/mysql
+      - ./mysql-timezone.cnf:/etc/mysql/conf.d/timezone.cnf:ro
     ports:
       - "3309:3306"