init

#!/bin/sh
set -e
for t in rsa ecdsa ed25519; do
  if [ ! -f /etc/ssh/ssh_host_${t}_key ]; then
    echo >&2 "generating ${t} host key..."
    ssh-keygen -t ${t} -f /etc/ssh/ssh_host_${t}_key -N '' -q
  else
    echo >&2 "using pre-existing ${t} host key..."
  fi
done
if [ "x$SSH_USER" != "x" ]; then
  new_user=${SSH_USER}
  new_uid=${SSH_UID:-1000}
  echo >&2 "creating user $new_user (uid:${new_uid})..."
  adduser -u "${new_uid}" -h /home/"${new_user}" -D "${new_user}"
  passwd -u "${new_user}"

  if [ ! -d "/home/${new_user}/.ssh" ]; then
    mkdir -p /home/${new_user}/.ssh;
    if [ "x$SSH_KEYS_FROM" != "x" ]; then
      for k in `find $SSH_KEYS_FROM -type f -name '*.pub'`; do
        cat $k >> /home/${new_user}/.ssh/authorized_keys
      done
    fi
  fi
  chown -R ${new_user} /home/${new_user}/.ssh
  chmod 0500 /home/${new_user}/.ssh
fi
echo >&2 "executing sshd in the foreground..."
exec /usr/sbin/sshd -D -e