post_install() {
	if ! getent group proxy &>/dev/null; then
		groupadd -g 15 proxy &>/dev/null
	fi
	if ! getent passwd proxy &>/dev/null; then
		useradd -u 15 -g proxy -d /var/empty proxy
	fi
	chown proxy.proxy var/{cache,log}/squid
}

post_upgrade() {
	post_install
}

post_remove() {
	if getent passwd proxy &>/dev/null; then
		userdel proxy >/dev/null
	fi
	if getent group proxy &>/dev/null; then
		groupdel proxy >/dev/null
	fi
}