Switch from MySQL to SQLite for simpler database setup

docker-compose.yml

@@ -13,23 +13,7 @@ services:
       - /app/node_modules
     environment:
       - NODE_ENV=development
-      - DB_HOST=mysql
-      - DB_USER=root
-      - DB_PASSWORD=password
-      - DB_NAME=rsvp_db
-    depends_on:
-      - mysql
-
-  mysql:
-    container_name: rsvp_manager_db
-    image: mysql:8.0
-    ports:
-      - "3306:3306"
-    environment:
-      - MYSQL_ROOT_PASSWORD=password
-      - MYSQL_DATABASE=rsvp_db
-    volumes:
-      - mysql_data:/var/lib/mysql
+    restart: unless-stopped
 
 volumes:
   mysql_data: