Add drone fix 15/?: try to control Hugo through environment variable

.drone.yml

@@ -16,14 +16,15 @@ steps:
   - name: build-live
     image: klakegg/hugo:ext-alpine
     commands:
-    - unset HUGO_DESTINATION
-    - hugo -D --baseUrl "http://danilafe.com:8080" --destination /live-output
+    - hugo -D --baseUrl "http://danilafe.com:8080"
     - ls -la
     - ls -la /live-output
     - ls -la /target
     volumes:
     - name: live-output
       path: /live-output
+    environment:
+      HUGO_DESTINATION: /live-output
   - name: upload-live
     image: eeacms/rsync
     commands: