Add multi-package Alpine packaging

packaging/alpine/blueprint/APKBUILD

@@ -0,0 +1,28 @@
+# Maintainer: Your Name <you@example.com>
+pkgname=example-package
+pkgver=0.1.0
+pkgrel=0
+pkgdesc="Short package description"
+url="https://example.com/example-package"
+arch="x86_64 aarch64"
+license="Apache-2.0"
+depends=""
+makedepends="build-base"
+subpackages="$pkgname-doc"
+source="$pkgname-$pkgver.tar.gz::https://example.com/releases/$pkgver.tar.gz"
+builddir="$srcdir/$pkgname-$pkgver"
+
+build() {
+	make
+}
+
+check() {
+	make check
+}
+
+package() {
+	install -Dm755 "$builddir"/example-package "$pkgdir"/usr/bin/example-package
+}
+
+sha512sums="
+"