Add basic PKGBUILD for Arch Linux

PKGBUILD

@@ -0,0 +1,17 @@
+pkgname=alfis
+pkgver=0.3.12
+pkgrel=1
+pkgdesc="Alternative Free Identity System"
+arch=('x86_64')
+license=('AGPL3')
+url='https://github.com/Revertron/Alfis'
+depends=('webkit2gtk')
+backup=("etc/$pkgname.toml")
+source=("https://github.com/Revertron/Alfis/releases/download/v${pkgver}/alfis-linux-amd64-v${pkgver}.zip")
+sha256sums=('SKIP')
+
+package() {
+	cd "$srcdir"
+	install -Dm 755 "$pkgname"          "$pkgdir/usr/bin/$pkgname"
+	install -Dm 644 "$pkgname.toml"     "$pkgdir/etc/$pkgname.toml"
+}

README.md

@@ -38,3 +38,16 @@ cargo build
 ### On Linux
 If you are building on Linux you must ensure that you have `libwebkitgtk` library installed.
 You can do it by issuing this command: `sudo apt install libwebkit2gtk-4.0-dev` (on Debian/Ubuntu and derivatives).
+
+#### On Arch Linux
+
+Create and install package with this commands:
+
+```sh
+# make package
+curl -L -O https://raw.githubusercontent.com/Revertron/Alfis/master/PKGBUILD
+makepkg
+
+# install package (from root)
+pacman -U alfis-0.3.12-1-x86_64.pkg.tar.xz
+```