modify ci config

.drone.yml

@@ -12,6 +12,19 @@ steps:
       - go build -o /build/ddns-client -ldflags "-w -s" .
       - cp config.default.yml /build/config.yml
 
+  - name: pack release
+    image: alpine
+    volumes:
+      - name: deps
+        path: /build
+    commands:
+      - apk add --no-cache zip
+      - |
+        cd /build
+        zip -r release.zip ddns-client config.yml
+    when:
+      event: tag
+
   - name: gitea release
     image: plugins/gitea-release
     volumes: