Nextcloud broken into roles.

Updated the web nginx.conf and the source is not given in the readme.
Restricted to gondor.
Webserver image and container names are now picked from the vars file.

nextcloud/readme.md

@@ -1,46 +1,2 @@
-# Docker on Ubuntu 18.04
-
-This playbook will install Docker an Ubuntu 18.04 machine, as explained in the guide on
-[How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-18-04).
-A number of containers will be created with the options specified in the `vars/default.yml` variable file.
-
-## Settings
-
-- `create_containers`: number of containers to create.
-- `default_container_name`: default name for new containers.
-- `default_container_image`: default image for new containers.
-- `default_container_command`: default command to run on new containers.
-
-
-## Running this Playbook
-
-Quick Steps:
-
-### 1. Obtain the playbook
-```shell
-git clone https://github.com/do-community/ansible-playbooks.git
-cd ansible-playbooks/docker_ubuntu1804
-```
-
-### 2. Customize Options
-
-```shell
-nano vars/default.yml
-```
-
-```yml
-#vars/default.yml
----
-create_containers: 4
-default_container_name: docker
-default_container_image: ubuntu
-default_container_command: sleep 1d
-```
-
-### 3. Run the Playbook
-
-```command
-ansible-playbook -l [target] -i [inventory file] -u [remote user] playbook.yml
-```
-
-For more information on how to run this Ansible setup, please check this guide: [How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04](https://www.digitalocean.com/community/tutorials/how-to-use-ansible-to-install-and-set-up-docker-on-ubuntu-18-04).
+The web/nginx.conf is from 
+https://github.com/nextcloud/docker/blob/master/.examples/docker-compose/with-nginx-proxy/postgres/fpm/web/nginx.conf