Add data directory option on NextCloud

nextcloud/config.json

@@ -25,6 +25,7 @@
     "use_own_certs": false,
     "certfile": "fullchain.pem",
     "keyfile": "privkey.pem",
+    "data_directory": "/share/nextcloud",
     "trusted_domains": "your-domain, your-domain2",
     "OCR": false,
     "OCRLANG": "fra",
@@ -38,6 +39,7 @@
     "use_own_certs": "bool",
     "certfile": "str",
     "keyfile": "str",
+    "data_directory": "str",
     "OCR": "bool?",
     "OCRLANG": "str?",
     "Full_Text_Search": "bool?",