diff --git a/docker-compose.yml b/docker-compose.yml
index bfd1f45..4280c41 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -8,6 +8,9 @@ services:
       PGID: "100"
       TZ: "America/Toronto"
       IPX_LOG: "ipx=info"
+    # IPX_DATABASE_URL=postgres://... to use Postgres; without it, /data/state.db (SQLite).
+    env_file:
+      - /mnt/fast/appdata/ipodderx/database.env
     ports:
       - "8099:8099"          # web UI
       - "6881:6881/tcp"      # BitTorrent peers