chg: [nextcloud] updating nextcloud to version ``1.1.1``

New image is nextcloud ``0.17`` with additional ``libgmp``. It might
require some love for maintenance.

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

nextcloud/build/Dockerfile

@@ -1,5 +1,5 @@
-## This is a cache  of nextcloud image
-FROM docker.0k.io/nextcloud:1.0.0
+## Mirror from nextcloud:latest (0.17), with small patch for gmp.
+FROM docker.0k.io/nextcloud:1.1.1
 
 
 ##