Add environment variables to front-service docker build

docker-compose.yml

@@ -45,6 +45,10 @@ services:
       - ./daily-thought-frontend:/frontend-service/app
       - /frontend-service/app/node_modules
       - /frontend-service/app/.next
+    environment:
+      - NEXT_PUBLIC_FEED_SERVICE_URL=http://localhost:9001/
+      - NEXT_PUBLIC_USER_SERVICE_URL=http://localhost:9002/
+      - NEXT_PUBLIC_FRIEND_SERVICE_URL=http://localhost:9003/
 
   feed-mongo:
     image: mongo