Migrate Nextcloud to per-service ZFS datasets

nextcloud/compose.yaml

@@ -4,7 +4,7 @@ services:
     restart: always
     command: --transaction-isolation=READ-COMMITTED --log-bin=binlog --binlog-format=ROW
     volumes:
-      - /mnt/storage/appdata/nextcloud/mysql:/var/lib/mysql
+      - /var/lib/nextcloud/db:/var/lib/mysql
     networks:
       - default
     environment:
@@ -21,7 +21,7 @@ services:
     ports:
       - 8080:80
     volumes:
-      - /mnt/storage/appdata/nextcloud/www/html:/var/www/html
+      - /var/lib/nextcloud/data/www/html:/var/www/html
     networks:
       - default
     environment: