set timezone on mariadb container

server.docker-compose.yml

@@ -24,6 +24,7 @@ services:
     ports:
       - 3306:3306
     environment:
+      - TZ=Europe/Berlin
       - MARIADB_ROOT_PASSWORD=i4mGr00ti4mGr00t
     volumes:
       - db-dir:/var/lib/mysql