Add ZFS mount for gitea, add doc

doc/gitea.md

@@ -3,6 +3,7 @@
 ## Setup using installer, create user root
 
 ```shell
+vim /etc/gitea.conf
 INSTALL_LOCK to false
 ```
 
@@ -21,3 +22,16 @@ INSTALL_LOCK to false
 - Email attribute: `mail`
 
 No Bind-DN and password needed!
+
+## Create backup dump to file
+
+```shell
+cd /var/lib/gitea/
+sudo -u _gitea gitea dump -c /etc/gitea.conf
+```
+
+## Reset root password
+```shell
+cd /var/lib/gitea/
+sudo -u _gitea gitea admin change-password --config /etc/gitea.conf -u root -p pw
+```