chore(addons): unified database standard

Author: duanhongyi

.drone/drone.yml

@@ -34,16 +34,4 @@ steps:
       from_secret: github_token
   when:
     event:
-    - push
-  volumes:
-  - name: image_registries
-    path: /etc/containers/registries.conf
-
-trigger:
-  event:
-  - push
-
-volumes:
-- name: image_registries
-  host:
-    path: /etc/containers/registries.conf
+    - push

addons/index.yaml

@@ -1,9 +1,5 @@
 apiVersion: v1
 entries:
-  memcached:
-    - name: memcached
-      description: "Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering."
-      version: 1.1.0
   mysql:
     - name: mysql
       description: "MySQL is a fast, reliable, scalable, and easy to use open-source relational database system."