Add Gerrit behind reverse-proxy
diff --git a/TODO.on.site b/TODO.on.site
index e252513..3f1d935 100644
--- a/TODO.on.site
+++ b/TODO.on.site
@@ -9,3 +9,4 @@
 * Set server_name in `nginx/sa.conf`
 * Set SIMPLEID_BASE_URL in `simpleid/www/config.php`
 * Make sure identities point to the right URL
+* Set CANONICAL_WEB_URL in `gerrit/environment`