#!/bin/bash

adduser -D "user"
chmod 750 "/home/user"
PASSWORD="USER_PASSWORD"
if [[ -z "${!PASSWORD}" ]]; then
  PASSWORD=$(head -c10 </dev/urandom | base64)
else
  PASSWORD=${!PASSWORD}
fi
echo -e "Password: ${PASSWORD}\n"
echo -e "${PASSWORD}\n${PASSWORD}" | passwd "user" &>/dev/null
unset PASSWORD

if [[ -n "${SSHD_CHALLENGE_DIR}" ]]; then
  sed -i "s|^AuthorizedKeysFile.*|AuthorizedKeysFile ${SSHD_CHALLENGE_DIR}|" /etc/ssh/sshd_config
fi

/usr/sbin/sshd -D