this might do it

.drone.yml

@@ -12,13 +12,14 @@ steps:
   - apk add hugo
   - hugo
 - name: publish
-  image: alpine:3
-  volumes:
-  - name: blog
-    path: /mnt/blog/
-  commands:
-  - cp -r public/* /mnt/blog/
-volumes:
-- name: blog
-  host:
-    path: /var/www/blog.ndumas.com
+  image: drillster/drone-rsync
+  settings:
+    key:
+      from_secret: blog_sync_key
+    user: blog
+    delete: true
+    recursive: true
+    hosts: ["blog.ndumas.com"]
+    source: ./public/
+    target: /var/www/blog.ndumas.com
+    include: ["*"]