Added get_domain function

roles/docker-discourse/tasks/main.yml

@@ -16,7 +16,7 @@
   include_role:
     name: nginx-domain-setup
   vars:
-    domain:   "{{ domains[application_id] }}"
+    domain:   "{{ domains | get_domain(application_id) }}"
     http_port:   "{{ ports.localhost.http[application_id] }}"
   when: run_once_docker_discourse is not defined
 

roles/docker-discourse/templates/discourse_application.yml.j2

@@ -41,7 +41,7 @@ env:
   UNICORN_WORKERS: 8
 
   ## Required. Discourse will not work with a bare IP number.
-  DISCOURSE_HOSTNAME: {{domains[application_id]}}
+  DISCOURSE_HOSTNAME: {{domains | get_domain(application_id)}}
 
   ## Uncomment if you want the container to be started with the same
   ## hostname (-h option) as specified above (default "$hostname-$config")
@@ -137,7 +137,7 @@ run:
   - exec: rails r "SiteSetting.openid_connect_discovery_document = '{{oidc.client.discovery_document}}'"
   - exec: rails r "SiteSetting.openid_connect_client_id = '{{oidc.client.id}}'"         
   - exec: rails r "SiteSetting.openid_connect_client_secret = '{{oidc.client.secret}}'"     
-  - exec: rails r "SiteSetting.openid_connect_rp_initiated_logout_redirect = 'https://{{domains[application_id]}}'"
+  - exec: rails r "SiteSetting.openid_connect_rp_initiated_logout_redirect = 'https://{{domains | get_domain(application_id)}}'"
   - exec: rails r "SiteSetting.openid_connect_allow_association_change = false"
   - exec: rails r "SiteSetting.openid_connect_rp_initiated_logout = true"
 {% endif %}