add mariadb to docker-compose file

docker-compose.yaml

@@ -15,3 +15,12 @@ services:
       - ./database.db:/app/database.db
     ports:
       - 127.0.0.1:80:80
+  db:
+    image: mariadb:10.7.8-focal
+    restart: always
+    environment:
+      - MARIADB_ROOT_PASSWORD=notasecuresecretkeyonlyuseforlocaldevelopment
+    volumes:
+      - ./database_mysql:/var/lib/mysql
+    ports:
+      - 127.0.0.1:3306:3306