[nextcloud] for fastcgi, paths need to be correct

Easiest way: have nginx and nextcloud container with same webroot

apps/nextcloud/nginx/default.conf

@@ -49,7 +49,7 @@ server {
     fastcgi_hide_header X-Powered-By;
 
     # Path to the root of your installation
-    root /var/www/nextcloud;
+    root /var/www/html;
 
     # Specify how to handle directories -- specifying `/index.php$request_uri`
     # here as the fallback means that Nginx always exhibits the desired behaviour

apps/nextcloud/templates/deployment.yaml

@@ -80,7 +80,7 @@ spec:
             - name: etcletsencrypt
               mountPath: "/etc/letsencrypt"
             - name: nextcloud-data
-              mountPath: "/var/www/nextcloud"
+              mountPath: "/var/www/html"
         - name: nextcloud
           image: nextcloud:20.0.11-fpm
           ports: