fix: seed content images onto active filesystem disk

ContentSeeder always wrote to public; preview/prod use r2 so
URLs pointed at empty media host. Put fixtures on PublicImageUploadRules disk.

docker-compose.deploy.yml

@@ -14,12 +14,7 @@ services:
     restart: "no"
     env_file:
       - .env
-    command: >
+    command: ["php", "artisan", "migrate", "--force", "--no-interaction"]
-      sh -c
-      "php artisan migrate --force --no-interaction
-       && (php artisan db:seed --class=ContentSeeder --force --no-interaction 2>&1
-           && php artisan media:generate-variants --force 2>&1) || true
-       && echo 'migrate+seed done'"
     networks:
       - dokploy-network