Added mongo container

.gitignore

@@ -9,4 +9,7 @@ backend/node_modules/
 backend/.env
 
 # Frontend-specific
-frontend/node_modules/
+frontend/node_modules/
+
+# Database-specific
+database/data/

docker-compose.yml

@@ -1,5 +1,6 @@
 services:
   backend:
+    container_name: backend
     build:
       context: ./backend
       dockerfile: Dockerfile
@@ -10,6 +11,7 @@ services:
       - ./backend:/app
 
   frontend:
+    container_name: frontend
     build:
       context: ./frontend
       dockerfile: Dockerfile
@@ -18,4 +20,12 @@ services:
     volumes:
       - ./frontend:/app
       - ./frontend:/node_modules
+  
+  db:
+    container_name: database
+    image: mongodb/mongodb-community-server
+    ports:
+      - "27017:27017"
+    volumes:
+      - ./database/data:/data/db