Fix cron build context to match Dockerfile COPY paths

docker-compose.yml

@@ -13,7 +13,7 @@ services:
       - dokploy-network
 
   outline:
-    image: docker.getoutline.com/outlinewiki/outline:latest
+    image: docker.getoutline.com/outlinewiki/outline:1.6.1
     container_name: outline
     restart: unless-stopped
     env_file:
@@ -70,8 +70,7 @@ services:
 
   cron:
     build:
-      context: .
-      dockerfile: cron/Dockerfile
+      context: ./cron
     container_name: outline-cron
     restart: unless-stopped
     depends_on: