diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 88b8618..4b66f53 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -8,13 +8,10 @@ services:
     # .env-Datei - siehe .env.example als Vorlage.
     env_file:
       - .env
-    environment:
-      - SYNC_INTERVAL_SECONDS=900
-      - FLATHUB_REMOTE_URL=https://dl.flathub.org/repo/
-      - FLATHUB_GPG_URL=https://dl.flathub.org/repo/flathub.gpg
     volumes:
       - repo-data:/srv/flatpak-mirror
-      - ./config:/config:ro # Optional
+      - ./config:/config:ro
+      - ./gpg:/etc/flatpak-sign/gnupg
     restart: unless-stopped
 
   nginx: