various tweaks and fixes

nextcloud/README.md

@@ -21,6 +21,12 @@ docker run \
 nextcloud/all-in-one:latest
 ```
 
+## Trusted Proxy
+
+```bash
+docker exec --user www-data -it nextcloud-aio-nextcloud php occ config:system:set trusted_proxies 2 --value="10.1.0.0/16"
+```
+
 ## Uninstall
 
 ```bash