Added get_domain function

roles/docker-gitlab/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-gitlab/templates/docker-compose.yml.j2

@@ -6,7 +6,7 @@ services:
 
   web:
     image: "gitlab/gitlab-ee:{{applications.gitlab.version}}"
-    hostname: '{{domains[application_id]}}'
+    hostname: '{{domains | get_domain(application_id)}}'
 {% include 'roles/docker-compose/templates/services/base.yml.j2' %}
     ports:
       - "127.0.0.1:{{ports.localhost.http[application_id]}}:80"