General optimations and debugging

roles/docker-central-database/templates/services/mariadb.yml.j2

@@ -1,6 +1,6 @@
 # This template needs to be included in docker-compose.yml, which depend on a mariadb database
 {% if not applications | is_feature_enabled('central_database',application_id) %}
-  database:
+  {{ database_host }}:
     container_name: {{application_id}}-database
     logging:
       driver: journald

roles/docker-central-database/templates/services/postgres.yml.j2

@@ -1,6 +1,6 @@
 # This template needs to be included in docker-compose.yml, which depend on a postgres database
 {% if not applications | is_feature_enabled('central_database',application_id) %}  
-  database:
+  {{ database_host }}:
     image: postgres:{{applications.postgres.version}}-alpine
     container_name: {{application_id}}-database
     env_file: