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/playbook.yml

@@ -2,95 +2,12 @@
 # DO Community Playbooks: Nextcloud
 #################################################
 ---
-- hosts: all
+- hosts: gondor
   become: true
   vars_files:
     - vars/default.yml
 
-  tasks:
-    - name: Pull Nextcloud image
-      docker_image:
-        name: "{{ container_image }}"
-        source: pull
-        force_source: yes
-
-    - name: Copy dockerfile
-      synchronize: src=web dest=/tmp
-
-    - name: Build nginx webserver image
-      docker_image:
-        name: nextcloud-web
-        build:
-          path: /tmp/web/
-          dockerfile: /tmp/web/Dockerfile
-          pull: yes
-        state: present
-        source: build
-        force_source: yes
-
-    - name: Create Nextcloud container
-      docker_container:
-        name: "{{ container_name }}"
-        image: "{{ container_image }}"
-        state: started
-        restart_policy: "unless-stopped"
-        env:
-          POSTGRES_DB: "{{ db_name }}"
-          POSTGRES_USER: "{{ db_user }}"
-          POSTGRES_PASSWORD: "{{ db_pass }}"
-          POSTGRES_HOST: "{{ db_host }}"
-#          REDIS_HOST: "redis"
-        links:
-          - "postgres:db"
-#          - "redis:redis"
-        published_ports:
-          - "127.0.0.1:9000:9000"
-        volumes:
-          - /var/lib/nextcloud:/var/www/html
-
-    - name: Create webserver container
-      docker_container:
-        name: cloud-web
-        image: nextcloud-web
-        state: started
-        restart_policy: "unless-stopped"
-        links:
-          - "cloud:app"
-        published_ports:
-          - "127.0.0.1:9080:80"
-        volumes:
-          - /var/lib/nextcloud:/var/www/html:ro
-
-    - name: Add cron job
-      cron:
-        name: Nextcloud cron
-        minute: "*/5"
-        job: "docker exec -u www-data {{ container_name }} php cron.php"
-
-    - name: Check if Nginx conf file exists
-      stat: path="/etc/nginx/sites-available/{{ http_conf }}"
-      register: status
-
-    - name: No need to reload Nginx
-      debug: msg= {{ "No need to reload Nginx as sites-available entries have already been created" }}
-
-    - name: Set Nginx conf file
-      when: status.stat.exists == false
-      template:
-        src: "files/nginx.conf.j2"
-        dest: "/etc/nginx/sites-available/{{ http_conf }}"
-
-    - name: Enable new site
-      when: status.stat.exists == false
-      file:
-        src: "/etc/nginx/sites-available/{{ http_conf }}"
-        dest: "/etc/nginx/sites-enabled/{{ http_conf }}"
-        state: link
-      notify: Reload Nginx
-
-  handlers:
-    - name: Reload Nginx
-      service:
-        name: nginx
-        state: reloaded
-
+  roles:
+  - nextcloud
+  - webserver
+  - nginx