docs: seafile header sso (#3888)

docs/content/en/integration/trusted-header-sso/organizr/index.md

@@ -21,8 +21,10 @@ As with all guides in this section it's important you read the [introduction](..
 
 ## Tested Versions
 
-* Authelia: v4.35.5
+* Authelia:
-* Organizr: 2.1.1890
+  * v4.35.5
+* Organizr:
+  * 2.1.1890
 
 ## Before You Begin
 

docs/content/en/integration/trusted-header-sso/seafile/index.md

@@ -0,0 +1,75 @@
+---
+title: "Seafile"
+description: "Trusted Header SSO Integration for Seafile"
+lead: ""
+date: 2022-06-15T17:51:47+10:00
+draft: false
+images: []
+menu:
+integration:
+parent: "trusted-header-sso"
+weight: 420
+toc: true
+community: true
+---
+
+## Introduction
+
+This is a guide on integration of __Authelia__ and [Seafile] via the trusted header SSO authentication.
+
+As with all guides in this section it's important you read the [introduction](../introduction.md) first.
+
+## Tested Versions
+
+* Authelia:
+  * v4.35.5
+* [Seafile] Server:
+  * 9.0.4
+
+## Before You Begin
+
+This example makes the following assumptions:
+
+* __Application Root URL:__ `https://seafile.example.com`
+* __Authelia Root URL:__ `https://auth.example.com`
+* __User Email Domain:__ `@example.com`
+
+## Configuration
+
+To configure [Seafile] to trust the `Remote-User` and `Remote-Email` header do the following:
+
+1. Configure `seahub_settings.py` and adjust the following  settings:
+```python
+ENABLE_REMOTE_USER_AUTHENTICATION = True
+
+# Optional, HTTP header, which is configured in your web server conf file,
+# used for Seafile to get user's unique id, default value is 'HTTP_REMOTE_USER'.
+REMOTE_USER_HEADER = 'HTTP_REMOTE_USER'
+
+# Optional, when the value of HTTP_REMOTE_USER is not a valid email address，
+# Seafile will build a email-like unique id from the value of 'REMOTE_USER_HEADER'
+# and this domain, e.g. user1@example.com.
+REMOTE_USER_DOMAIN = 'example.com'
+
+# Optional, whether to create new user in Seafile system, default value is True.
+# If this setting is disabled, users doesn't preexist in the Seafile DB cannot login.
+# The admin has to first import the users from external systems like LDAP.
+REMOTE_USER_CREATE_UNKNOWN_USER = True
+
+# Optional, whether to activate new user in Seafile system, default value is True.
+# If this setting is disabled, user will be unable to login by default.
+# the administrator needs to manually activate this user.
+REMOTE_USER_ACTIVATE_USER_AFTER_CREATION = True
+
+# Optional, map user attribute in HTTP header and Seafile's user attribute.
+REMOTE_USER_ATTRIBUTE_MAP = {
+    'HTTP_REMOTE_NAME': 'name',
+    'HTTP_REMOTE_EMAIL': 'contact_email',
+}
+```
+
+## See Also
+
+* [Seafile Remote User Docs](https://manual.seafile.com/deploy/remote_user/)
+
+[Seafile]: https://www.seafile.com/