From 92c64fd62dc4ee2639b176dfbc32cebad9f01a54 Mon Sep 17 00:00:00 2001
From: CSDUMMI <31551856+CSDUMMI@users.noreply.github.com>
Date: Tue, 5 Dec 2023 16:05:29 +0100
Subject: [PATCH] Add documentation for the ONE_CLICK_SSO_LOGIN environment
 variable (#1300)

---
 content/en/admin/config.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/content/en/admin/config.md b/content/en/admin/config.md
index f8e8aada..2b1d3959 100644
--- a/content/en/admin/config.md
+++ b/content/en/admin/config.md
@@ -578,6 +578,15 @@ You must serve the files with CORS headers, otherwise some functions of Mastodon
 
 #### `OMNIAUTH_ONLY`
 
+#### `ONE_CLICK_SSO_LOGIN`
+Enables the `Login or Register` button.
+Useful for instances where all authentication takes place using a single
+external provider (CAS, SAML or OIDC).
+
+Enabling this will prevent caching for anonymous sessions.
+And, when using OIDC discovery, the identity provider has to be available
+before Mastodon starts.
+
 ### LDAP {#ldap}
 
 #### `LDAP_ENABLED`