Update .woodpecker.yml

.woodpecker.yml

@@ -1,10 +1,8 @@
-when:
-  - event: tag
-
 steps:
   build:
     image: git.balsys.eu.org/tomas/mkosi
     privileged: true
+    secrets: [signing-key]
     commands:
       - env
 
@@ -12,6 +10,8 @@ steps:
     image: woodpeckerci/plugin-gitea-release
     settings:
       base_url: ${CI_FORGE_URL}
-      files: [ "*.xz", "*.SHA256SUMS" ]
+      files: [ "*.xz", "*.SHA256SUMS", "*.gpg" ]
       api_key:
         from_secret: release_token 
+    when:
+      - event: tag