Update gitea doc

doc/gitea.md

@@ -0,0 +1,23 @@
+# Gitea
+
+## Setup using installer, create user root
+
+```shell
+INSTALL_LOCK to false
+```
+
+## Gitea LDAP Authentication settings
+
+- Authentication Type: `LDAP (via BindDN)`
+- Authentication Name: `LDAP`
+- Security Protocol: `Unencrypted`
+- Host: `gagarin`
+- Port: `389`
+- User Search Base: `dc=fet,dc=htu,dc=tuwien,dc=ac,dc=at`
+- User Filter: `(&(objectClass=posixAccount)(uid=%s))`
+- 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!