I have purchased a custom image slot in Contabo for 1.5 Euros. I uploaded a custom Leap image from the official Leap repos. But it asks me to enter a public ssh key before installing the system onto the server.

What I do is:

1. ssh-keygen on my machine, then copy the public key from .ssh/id_rsa.pub
2. I paste the ssh public key inside the Contabo cusotm image installer
3. I let it install
4. When I try to connect to the server via ssh, I get `Permission denied (publickey).` error. No idea what to do