implemented draf for gitlab role

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

@@ -1,24 +1,8 @@
 version: "3.7"
 
 services:
-  database:
-    image: postgres:13-alpine
-    ports:
-      - "9432:5432"
-    environment:
-      - POSTGRES_PASSWORD={{database_password}}
-      - POSTGRES_USER={{database_username}}
-      - POSTGRES_DB={{database_databasename}}
-    restart: unless-stopped
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U {{database_username}}"]
-      interval: 10s
-      timeout: 5s
-      retries: 6
-    volumes:
-      - type: volume
-        source: database
-        target: /var/lib/postgresql/data
+
+{% include 'templates/docker-postgres-service.yml.j2' %}
 
   application:
     restart: unless-stopped

roles/docker-listmonk/vars/main.yml

@@ -1,6 +1,7 @@
-docker_compose_instance_directory: "{{path_docker_compose_instances}}listmonk/"
-database_instance:  	"listmonk"
-database_host:      	"database"
-database_databasename:  "{{database_instance}}"
-database_username:  	"{{database_instance}}"
-database_password:  	"{{listmonk_database_password}}"
+docker_compose_instance_directory:  "{{path_docker_compose_instances}}listmonk/"
+database_instance:  	              "listmonk"
+database_host:      	              "database"
+database_databasename:              "{{database_instance}}"
+database_username:  	              "{{database_instance}}"
+database_password:  	              "{{listmonk_database_password}}"
+database_version:                   "{{ listmonk_database_version | default(postgres_default_version) }}"