Linode Dokku SSH

EDIT: This can be closed, I have started from a clean slate and now it works. I suppose I was doing something wrong I suppose.

Hi guys,

Trying to follow the basic Dokku getting started tutorial as found here. Now everything seems to work fine until I try to deploy the app:

git push dokku main:master

I keep getting asked for a password even though I added my public SSH key as per the first steps. No matter which password I enter, it says I do not have permission.

I suppose the SSH key is the public key of my local machine, right? Not the VPS? Or which ssh should I add where? I am really confused with all this.

Sorry if I am asking basic stupid questions but I am very new at all this.