Added promotion step

.drone.yml

@@ -80,6 +80,12 @@ steps:
       - chmod 600 $HOME/.ssh/known_hosts
       - ssh-keyscan -H git.2martens.de > $HOME/.ssh/known_hosts 2>/dev/null
       - ./gradlew -Prelease.useLastTag=true final jib
+  - name: promote-staging
+    image: danihodovic/drone-promote
+    settings:
+      drone_token:
+        from_secret: drone_token
+      target: production
 
 volumes:
   - name: cache