ci: alpine linux support

.github/workflows/linux_distribution_check.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         # arch suffering this issue: https://github.com/abseil/abseil-cpp/issues/709
-        container_image: ["fedora:latest", "debian:9", "ubuntu:20.04", "centos:7", "opensuse/tumbleweed", "alpine:latest"]
+        container_image: ["fedora:latest", "debian:9", "ubuntu:20.04", "centos:8", "opensuse/tumbleweed", "alpine:3.13"]
         compiler: [g++, clang++]
         build_type: [Release, Debug]
         shared_libraries: [ON, OFF]

ci/install_dependencies.sh

@@ -50,6 +50,11 @@ case "$distro_id" in
         debian_build_gtest
         ;;
 
+    'alpine')
+        apk update
+        apk add gcc g++ clang cmake make ccache expat-dev zlib-dev libssh-dev curl-dev gtest gtest-dev gmock libintl gettext-dev which dos2unix bash libxml2-utils diffutils python3
+        ;;
+
     'centos'|'rhel')
         yum -y install epel-release
         # enable copr for gtest