Fixed bug with app hotload

docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3'
 services:
   frontend:
-    build: ./frontend
+    #build: ./frontend
     image: frikky/shuffle:frontend
     container_name: shuffle-frontend
     hostname: shuffle-frontend
@@ -30,6 +30,7 @@ services:
       - ORG_ID=${ORG_ID}
       - DATASTORE_EMULATOR_HOST=shuffle-database:8000
       - APP_DOWNLOAD_LOCATION=${APP_DOWNLOAD_LOCATION}
+      - APP_HOTLOAD_FOLDER=/shuffle-apps
     restart: unless-stopped
     depends_on:
       - database