changed data structure

docker-compose.yml

@@ -19,7 +19,7 @@ services:
     environment:
       DB_HOST: mysql
       DB_USER: root
-      DB_PASSWORD: ${MYSQL_ROOT_PASSWORD}
+      DB_PASSWORD: ${DB_PASSWORD}
       DB_NAME: borrow_system
     depends_on:
       - mysql
@@ -32,7 +32,7 @@ services:
     image: mysql:8.0
     restart: unless-stopped
     environment:
-      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
+      MYSQL_ROOT_PASSWORD: ${DB_PASSWORD}
       MYSQL_DATABASE: borrow_system
     volumes:
       - mysql-data:/var/lib/mysql