sudo su

vi /etc/environment
# LANG=en_US.utf-8
# LC_ALL=en_US.utf-8

useradd -m -d /home/ubuntu -s /bin/bash -U ubuntu
vi /etc/sudoers.d/90-cloud-init-users
sudo usermod -aG docker ubuntu
mkdir -p /home/ubuntu/.ssh
vi /home/ubuntu/.ssh/authorized_keys