Refactored docker-compose roles

roles/docker-mobilizon/vars/configuration.yml

@@ -15,4 +15,8 @@ domains:
   canonical:
     - "event.{{ primary_domain }}"
   aliases:
-    - "events.{{ primary_domain }}"
+    - "events.{{ primary_domain }}"
+docker:
+  services:
+    database:
+      enabled: true

roles/docker-mobilizon/vars/main.yml

@@ -4,5 +4,5 @@ database_type:                  "postgres"
 database_gis_enabled:           true
 
 mobilizon_oidc_callback_url:    "{{ domains | get_url(application_id, web_protocol) }}/auth/openid_connect/callback"
-mobilizon_exposed_docker_port:  4000
+container_port:  4000
 mobilizon_host_conf_exs_file:   "{{docker_compose.directories.config}}config.exs"