[libdmapsharing] .gitlab-ci.yml: add build test using Alpine/musl

[W. Michael Petullo <wmpetullo src gnome org>]

commit 88deb2348685a8bd9c6cb59df2e302dbad3572e2
Author: W. Michael Petullo <mike flyn org>
Date:   Fri Jul 3 17:49:16 2020 -0500

    .gitlab-ci.yml: add build test using Alpine/musl

 .gitlab-ci.yml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 612d28a..361cb98 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,3 +15,18 @@ build-ubuntu:
     - ./configure --with-mdns=dns_sd --disable-tests --enable-more-warnings
     - make CFLAGS="-Wall -Wextra -Werror"
     - make clean
+
+build-alpine:
+  image: alpine:arm32v7/latest
+
+  before_script:
+    - apk update
+    - apk add --no-cache autoconf automake avahi-compat-libdns_sd avahi-glib avahi-dev check gcc gtk-doc 
gdk-pixbuf-dev libgee-dev glib-dev gst-plugins-base-dev gtk+3.0-dev libsoup-dev libtool pkgconf
+
+  script:
+    - ./autogen.sh --with-mdns=avahi --disable-tests --enable-more-warnings
+    - make CFLAGS="-Wall -Wextra -Werror"
+    - make clean
+    - ./configure --with-mdns=dns_sd --disable-tests --enable-more-warnings
+    - make CFLAGS="-Wall -Wextra -Werror"
+    - make clean