fix drone trigger

.drone.yml

@@ -60,6 +60,12 @@ steps:
     ref:
     - refs/tags/**
 
+trigger:
+  ref:
+  - refs/heads/master
+  - refs/pull/**
+  - refs/tags/**
+
 ---
 kind: pipeline
 name: notifications
@@ -79,7 +85,7 @@ steps:
     DOCKERHUB_USERNAME:
       from_secret: docker_username
     README_PATH: README.md
-    SHORT_DESCRIPTION: Rootless NGINX - High-performance HTTP server and reverse proxy
+    SHORT_DESCRIPTION: CentOS 7 image to build RPM packages
   when:
     status:
     - success
@@ -114,6 +120,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: d7fac607c0574ca175ff02f3676d7f67b5e5bb00f46719675c58bbaf3f3c94a1
+hmac: 43953f72141ac3b75e8b2dddd9941afa9edb407fc7b49d84e765689e748b0b7d
 
 ...