update drone.yml

drone.yml

@@ -36,7 +36,7 @@ steps:
     - cp -p service/radangel.service dist/etc/systemd/system/radangel.service
     - cp -p service/websockify.service dist/etc/systemd/system/websockify.service
     - mkdir -p dist/var/www/html/gamma
-    - cp -rp html/ dist/var/www/html/gamma/
+    - cp -rp html/. dist/var/www/html/gamma/
     - mkdir -p dist/etc/nginx/snippets
     - cp -p config/nginx-datasrc-location.conf dist/etc/nginx/snippets/nginx-datasrc-location.conf
     - tar -czvf $ARCHIVE.tar.gz -C dist .