Added draft for central postgres and mariadb. variables and networks still need to be adapted

roles/docker-matrix-compose/tasks/main.yml

@@ -4,6 +4,11 @@
   vars:
     domain:     "{{synapse_domain}}"
     http_port:  "{{synapse_http_port}}"
+
+- name: create database in central Postgres
+  include_role:
+    name: docker-postgres
+  when: enable_central_database | bool
         
 - name: "include tasks nginx-docker-proxy-domain.yml"
   include_tasks: nginx-docker-proxy-domain.yml