attempt to fix tt-rss fpm app name

network/docker-compose.yml

@@ -412,6 +412,8 @@ services:
   tt-rss-web-nginx:
     image: ghcr.io/tt-rss/tt-rss-web-nginx:latest
     restart: unless-stopped
+    environment:
+      - APP_UPSTREAM=tt-rss
     ports:
       - 80
     volumes: