Added get_domain function

roles/docker-yourls/tasks/main.yml

@@ -7,7 +7,7 @@
   include_role:
     name: nginx-domain-setup
   vars:
-    domain:   "{{ domains[application_id] }}"
+    domain:   "{{ domains | get_domain(application_id) }}"
     http_port:   "{{ ports.localhost.http[application_id] }}"
 
 - name: "copy docker-compose.yml and env file"

roles/docker-yourls/templates/env.j2

@@ -2,6 +2,6 @@ YOURLS_DB_HOST: "{{database_host}}"
 YOURLS_DB_USER: "{{database_username}}"
 YOURLS_DB_PASS: "{{database_password}}"
 YOURLS_DB_NAME: "{{database_name}}"
-YOURLS_SITE:    "{{ web_protocol }}://{{domains[application_id]}}"
+YOURLS_SITE:    "{{ web_protocol }}://{{domains | get_domain(application_id)}}"
 YOURLS_USER:    "{{applications.yourls.users.administrator.username}}"
 YOURLS_PASS:    "{{applications[application_id].credentials.administrator_password}}"