Excuse me.
You have the right diagnostic and SJ20035 have the right commands via this link
As I was suspecting, the ssh command in command_line.yaml is not executed in my standard environment assigned to pi user (Home Assistant is installed in a docker under Debian).
The link in reference is perfect; the only line to add is to create a .ssh folder in the config directory if it doesn’t exist.
Thank too both.
The result
