diff --git a/ocis/docker-compose.yml b/ocis/docker-compose.yml
index b18836b..9537414 100644
--- a/ocis/docker-compose.yml
+++ b/ocis/docker-compose.yml
@@ -25,11 +25,27 @@ services:
       IDM_ADMIN_PASSWORD: "ReplaceWithYourSecurePassword"
       
       OCIS_LOG_LEVEL: error
+
+      # --- Thumbnail & HEIC Configuration ---
+      THUMBNAILS_IMAGINARY_URL: http://imaginary:9000
+      # Force HEIC to process through imaginary instead of built-in fallback
+      THUMBNAILS_RESOLUTION_MIN_WIDTH: 32
+      THUMBNAILS_RESOLUTION_MIN_HEIGHT: 32
     volumes:
       - ocis_config:/etc/ocis
       - ocis_data:/var/lib/ocis
     networks:
       - caddy_net
+    depends_on:
+      - imaginary
+
+  imaginary:
+    image: h2non/imaginary:latest
+    container_name: ocis_imaginary
+    restart: unless-stopped
+    command: -cors -gzip -enable-url-source
+    networks:
+      - caddy_net
 
 volumes:
   ocis_config:
@@ -37,4 +53,4 @@ volumes:
 
 networks:
   caddy_net:
-    external: true
\ No newline at end of file
+    external: true