post_install(){
	groupadd -g 400 brewpi >/dev/null 2>&1
	useradd -u 400 -s /usr/bin/nologin -g brewpi -G uucp,lock brewpi >/dev/null 2>&1
}

post_upgrade(){
	getent group brewpi >/dev/null 2>&1 || groupadd -g 400 brewpi >/dev/null 2>&1
	getent passwd brewpi >/dev/null 2>&1 || useradd -u 400 -s /usr/bin/nologin -g brewpi -G uucp,lock brewpi >/dev/null 2>&1
}