Create user:
sudo adduser username
usermod -a -G ssh username
You can remove this later:
sudo vim /etc/sudoers
and add
username ALL=(root) NOPASSWD: ALL
ssh-copy-id username@node
Should be able to do this without entering password.
ssh 'username@node'
sudo su -
docker-machine -D create --driver generic --generic-ip-address=<node_ip_address_here> --generic-ssh-key ~/.ssh/id_rsa --generic-ssh-user=username --engine-storage-driver=overlay2 node
To see environment variables for config
docker-machine env node
do configuration
eval $(docker-machine env node)