diff --git a/doc/COLLABORA.md b/doc/COLLABORA.md
index 64a0f1e..1166ff7 100644
--- a/doc/COLLABORA.md
+++ b/doc/COLLABORA.md
@@ -83,4 +83,6 @@ Reload the apache configuration, and launch `docker-compose up`.
 
 Lastly, in KaraDAV's `config.local.php` set `WOPI_DISCOVERY_URL` to `http://docs.karadav.localhost/hosting/discovery`.
 
-Now you should be able to edit ODS/ODT/etc. files from the web UI using Collabora.
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+Now you should be able to edit ODS/ODT/etc. files from the web UI using Collabora.
+
+See also [this alternative docker image](https://github.com/tiredofit/docker-collabora-online).
\ No newline at end of file