chrony added and some README updates

README.md

@@ -38,7 +38,9 @@ Then tighten some security settings:
 If you are using this Playbook somewhere other than on a
 [Webarchitects](https://www.webarchitects.coop/) virtual server in Sheffield
 then the `iptables` and `munin-node` roles will, as a minimum, need editing and
-might be best omitted.
+might be best omitted. Also note that these Playbooks are based on using
+`mx.webarch.net` for incoming email -- this is an anti-spam gateway, if this
+wasn't used then SpamAssassin should probably be added to the mix.
 
 The email setup is based on the
 [mail-reciever](https://github.com/discourse/mail-receiver) Docker container

discourse.yml

@@ -10,6 +10,7 @@
     - locale
     - vim
     - email
+    - chrony
     - iptables
 
   vars:

roles/chrony/tasks/main.yml

+---
+- name: Time related packages installed
+  apt:
+    pkg: "{{ item }}"
+    state: latest
+    update_cache: yes
+  with_items:
+    - chrony
+    - rdate
+
+- name: Set the date after a reboot crontab in place
+  cron:
+    name: Check the date following reboots
+    special_time: reboot
+    job: "rdate -s ntp.demon.co.uk"
+