ci: add alpine tests

I plan to package CDBA in alpine, as it uses musl libc it is a lot
easier for things to break there. Add alpine latest edge and stable
build tests to catch these.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

.github/workflows/ci.yml

@@ -32,6 +32,8 @@ jobs:
         family: [x86-64]
         compiler: [gcc, clang]
         container:
+          - alpine:edge
+          - alpine:latest
           - archlinux:latest
           - debian:testing
           - debian:stable

ci/alpine.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2021 Canonical Ltd.
+# Copyright (c) 2023 Linaro Ltd
+# Author: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+#                             <krzk@kernel.org>
+#
+
+set -ex
+
+PKGS_CC="gcc"
+case $CC in
+	clang*)
+		PKGS_CC="clang"
+	;;
+esac
+
+apk add \
+	linux-headers \
+	libftdi1-dev \
+	yaml-dev \
+	eudev-dev \
+	meson \
+	musl-dev \
+	libc-dev \
+	$PKGS_CC
+
+echo "Install finished: $0"