HowTo add user on ubuntu with sudo and ssh key access

add_user.sh

if [ "$1" == '' ]; then
  echo "Please add a username to the command"
  exit 1;
fi

newuser=$1
# Step1) first create user account
sudo adduser $newuser
# this will ask to set a new password and some other basic account information

# Step2) add user to group sudo
sudo adduser $newuser sudo

# for ssh key access add .ssh folder and authorized_keys file
sudo mkdir /home/$newuser/.ssh
sudo touch /home/$newuser/.ssh/authorized_keys
# Note: you will also have to add the public key to the file

sudo chown -R $newuser:$newuser 

With this command:
sudo chown -R $newuser:$newuser
Did you mean to do:
sudo chown -R $newuser:$newuser /home/$newuser/.ssh