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/roles/nginx/handlers/main.yaml

@@ -0,0 +1,6 @@
+---
+# Handlers for Nginx role
+- name: Reload Nginx
+  service:
+    name: nginx
+    state: reloaded

nextcloud/roles/nginx/tasks/main.yaml

@@ -0,0 +1,24 @@
+---
+# Tasks for Nginx role
+- 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