docker fixes and nextcloud update

ansible/provisoning/ubuntu/install-docker.yaml

@@ -10,27 +10,7 @@
   - name: install prerequisites
     apt:
       name:
-        - apt-transport-https
-        - ca-certificates 
-        - curl 
-        - gnupg-agent
-        - software-properties-common
-      update_cache: yes
-
-  - name: add apt-key
-    apt_key:
-      url: https://download.docker.com/linux/ubuntu/gpg
-
-  - name: add docker repo
-    apt_repository:
-      repo: deb https://download.docker.com/linux/ubuntu focal stable
-
-  - name: install docker 
-    apt:
-      name: 
-        - docker-ce
-        - docker-ce-cli
-        - containerd.io
+        - docker.io
       update_cache: yes
 
   - name: add user permissions