ci: add publish step with sftp upload

.woodpecker.yml

@@ -9,4 +9,25 @@ pipeline:
     when:
       event: [push, tag]
 
+  publish:
+    image: docker.io/plugins/sftp
+    pull: true
+    settings:
+      host:
+        from_secret: deb_repo_ssh_host
+      port:
+        from_secret: deb_repo_ssh_port
+      username:
+        from_secret: deb_repo_ssh_username
+      password:
+        from_secret: deb_repo_ssh_password
+      files:
+        - ../*.deb
+        - ../*.dsc
+        - ../*.git
+        - ../*.changes
+      destination_path: /var/www/repository/debian/incoming
+    when:
+      event: [tag]
+
 branches: master