Fix docker-compose react-hot-loader

docker-compose.yml

@@ -30,7 +30,7 @@ services:
       - POSTGRES_PASSWORD
       - POSTGRES_PORT=5432
       - POSTGRES_USER
-      - WEBPACKER_DEV_SERVER_HOST=0.0.0.0
+      - WEBPACKER_DEV_SERVER_HOST=webpack_dev_server
     ports:
       - ${WEB_HOST_PORT}:3000