#!/bin/bash
set -e

uid=${UID?}
gid=${GID?}
user=${USER:-"build"}
export HOME="/home/${user}"

groupadd -g "$gid" "${user}"
useradd \
	-g "$gid" \
	-u "$uid" \
	-md "/home/${user}" \
	-s /bin/bash \
	"${user}"

mkdir -p "$HOME"
chown -R "$uid:$gid" "$HOME"
cd "$HOME"
setpriv --reuid="$uid" --regid="$gid" --init-groups "$@"