update drone.yml

drone.yml

 kind: pipeline
-name: clone-build-release
+name: clone-build-sign-release
 
 platform:
   os: linux
       find release -type f -exec md5sum '{}' \;
     - printf "\n\n\n======= BUILD FINISHED. =======\n\n\n"
 
+# http://plugins.drone.io/drone-plugins/drone-gpgsign/
+# https://github.com/drone-plugins/drone-gpgsign
+- name: sign
+  image: plugins/gpgsign
+  when:
+    event: [ push, tag ]
+  depends_on: [ build ]
+  settings:
+    key:
+      from-secret: gpg-key
+    passphrase:
+      from-secret: gpg-pass
+    detach_sign: true
+    clear_sign: true
+ files:
+      - release/*
+ excludes:
+      - release/*.md5
+
 # http://plugins.drone.io/drone-plugins/drone-gitea-release/
 # https://github.com/drone-plugins/drone-gitea-release
 - name: release
   image: plugins/gitea-release
   when:
     event: [ tag ]
-  depends_on: [ build ]
+  depends_on: [ sign ]
   settings:
     title: Release ${DRONE_REPO_NAME}-${DRONE_TAG} # file or string
     note: RELEASE.md # file or string