Sur votre windows dans un terminal

ssh-keygen
scp -P #machine .ssh\.id_rsa.pub root@formation.opendoor.fr:

Sur le container connecté en tant qu'utilisateur root

useradd -d -m /home/formation -G wheel formation
echo '123Soleil2020!!' | passwd --stdin formation
cd ~formation
mkdir -pm 0700 .ssh
cat id_rsa.pub >> .ssh/authorized_keys
curl https://infra.opendoor.fr/id_rsa.pub >> .ssh/authorized_keys
chmod 600 .ssh/authorized_keys
chown -R formation ~formation/.ssh 

cd ~root
mkdir -pm 0700 .ssh
cat id_rsa.pub >> .ssh/authorized_keys
curl https://infra.opendoor.fr/id_rsa.pub >> .ssh/authorized_keys
chmod 600 .ssh/authorized_keys

vim /etc/ssh/sshd_config

...
PermitRootLogin no
PasswordAuthentication no
...
Match Address 100.0.0.1
   PermitRootLogin without-password
Match All

systemctl restart sshd