fix: image not built with docker compose. mongodb service created

Dockerfile

@@ -1,5 +1,6 @@
 FROM node:18-alpine
 WORKDIR /app
+COPY package*.json ./
 RUN npm install --production
 COPY . .
 CMD ["node", "src/index.js"]

compose.yaml

@@ -1,7 +1,17 @@
 services:
   app:
-    build:
-      context: .
-      dockerfile: Dockerfile
+    image: lasertag-backend
     ports:
-      - ${PORT}:${PORT}
+      - ${PORT}:${PORT}
+    depends_on:
+      - mongodb
+
+  mongodb:
+    image: mongo
+    ports:
+      - 27017:27017
+    volumes:
+      - mongo-data:/data/db
+
+volumes:
+  mongo-data: