Update gitea doc

doc/gitea.md

@@ -1,4 +1,12 @@
-# Gitea LDAP Authentication settings
+# Gitea
+
+## Setup using installer, create user root
+
+```shell
+INSTALL_LOCK to false
+```
+
+## Gitea LDAP Authentication settings
 
 - Authentication Type: `LDAP (via BindDN)`
 - Authentication Name: `LDAP`
@@ -7,7 +15,9 @@
 - Port: `389`
 - User Search Base: `dc=fet,dc=htu,dc=tuwien,dc=ac,dc=at`
 - User Filter: `(&(objectClass=posixAccount)(uid=%s))`
-- Admin Filter: `(memberOf=cn=admin,ou=groups,dc=fet,dc=htu,dc=tuwien,dc=ac,dc=at)`
+- Admin Filter: doesn't work, otherwise `(memberOf=cn=admin,ou=groups,dc=fet,dc=htu,dc=tuwien,dc=ac,dc=at)`
 - First name attribute: `givenName`
 - Surname attribute: `sn`
 - Email attribute: `mail`
+
+No Bind-DN and password needed!