Optimized role structure in preparation for new backup script

roles/svc-db-redis/README.md

@@ -1,4 +1,4 @@
-# Role: svc-db-redis
+# Redis
 
 ## Description
 

roles/svc-db-redis/config/main.yml

@@ -0,0 +1,7 @@
+docker:
+  services:
+    redis: 
+      image:      redis
+      version:    alpine
+      backup:
+        enabled:  false

roles/svc-db-redis/templates/service.yml.j2

@@ -1,8 +1,10 @@
 # This template needs to be included in docker-compose.yml, which depend on redis
+{% set redis_image = applications | get_app_conf('svc-db-redis', 'docker.services.redis.image') %}
+{% set redis_version = applications | get_app_conf('svc-db-redis', 'docker.services.redis.version')%}
   redis:
-    image: redis:alpine
-    container_name: {{application_id}}-redis
-    restart: {{docker_restart_policy}}
+    image: "{{ redis_image }}:{{ redis_version }}"
+    container_name: {{ application_id }}-redis
+    restart: {{ docker_restart_policy }}
     logging:
       driver: journald
     volumes:

roles/svc-db-redis/vars/main.yml

@@ -1 +1 @@
-application_id: redis
+application_id: svc-db-redis