Git Server :SSH Permission denied, please try again.

[jok3r]

Hallo,
ich versuche vergeblich einen GitUser anzulegen, ich gehe nach dieser Anleitung vor ->
https://spieswl.github.io/insights/2018/synology-git-server

Console...

root@NAS:/volume2/homes/gituser# scp ~/.ssh/id_rsa.pub root@192.168.178.10:/volume2/homes/gituser/.ssh
root@192.168.178.10's password: 
Permission denied, please try again.
root@192.168.178.10's password:

Versuch zwei via root

XXX-MacBook-Pro:~ XXXX$ sudo -i
Password:
XXX-MacBook-Pro:~ root# 
XXX-MacBook-Pro:~ root#  scp ~/.ssh/id_rsa.pub root@192.168.178.10:/volume2/homes/gituser/.ssh
The authenticity of host '192.168.178.10 (192.168.178.10)' can't be established.
ECDSA key fingerprint is SHA256:v1OrdFkNiSNnDJhrKL+223tCr9e5KLtzp8xJLD6O2EI.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.178.10' (ECDSA) to the list of known hosts.
root@192.168.178.10's password: 
Permission denied, please try again.
root@192.168.178.10's password: 
Connection closed by 192.168.178.10 port 22
lost connection
XXX-MacBook-Pro:~ root#

Muss ich noch etwas beachten? Vor allem kann ich das anlegen nicht irgendwie umgehen?

Gruß