community/usbguard: move from testing

- add post-install warning

testing/usbguard/APKBUILD → community/usbguard/APKBUILD

 # Contributor: Michał Polański <michal@polanski.me>
 # Contributor: Nicolas Lorin <androw95220@gmail.com>
 # Maintainer: omni <omni+alpine@hack.org>
+maintainer="omni <omni+alpine@hack.org>"
 pkgname=usbguard
 pkgver=1.1.3
 pkgrel=2
@@ -30,6 +31,7 @@ subpackages="
 	$pkgname-bash-completion
 	$pkgname-zsh-completion
 	"
+install="$pkgname.post-install"
 source="https://github.com/USBGuard/usbguard/releases/download/usbguard-$pkgver/usbguard-$pkgver.tar.gz
 	usbguard.initd
 	"

community/usbguard/usbguard.post-install

+#!/bin/sh
+
+cat 1>&2 <<EOF
+*
+* WARNING:
+*
+* Prior to starting the USBGuard daemon (or service) for the first time
+* we need to generate a rules file for USBGuard so that the currently attached
+* USB devices (in particular mouse and keyboard) keep working
+* so that you will not GET LOCKED OUT OF YOUR SYSTEM.
+*
+* A rules file can be generated like this:
+*
+*   $ doas sh -c 'usbguard generate-policy > /etc/usbguard/rules.conf'
+*
+EOF