Cache updates (#7388)

* Add redis container to development setup

* Improve configurability of global cache:

- Push configuration into separate file

* Settings cache default depends on global cache configuration

* Update docker compose file

* Remove debug flag

* Allow caching for registry checks

* Cleanup docstring

* Adjust defautl behaviour

* Update docs for caching

* Adjust default docker compose file

* Update docs for devcontainer

* Cleanup config template file

* Update docker docs

* Update cache behaviour

.devcontainer/docker-compose.yml

@@ -13,6 +13,12 @@ services:
       POSTGRES_USER: inventree_user
       POSTGRES_PASSWORD: inventree_password
 
+  redis:
+    image: redis:7.0
+    restart: always
+    expose:
+      - 6379
+
   inventree:
     build:
       context: ..
@@ -31,6 +37,8 @@ services:
       INVENTREE_DB_HOST: db
       INVENTREE_DB_USER: inventree_user
       INVENTREE_DB_PASSWORD: inventree_password
+      INVENTREE_CACHE_HOST: redis
+      INVENTREE_CACHE_PORT: 6379
       INVENTREE_PLUGINS_ENABLED: True
       INVENTREE_SITE_URL: http://localhost:8000
       INVENTREE_CORS_ORIGIN_ALLOW_ALL: True