ci: add workflow to build on Alpine, too #3

	name: Alpine

	on: push

	jobs:
	alpine:
	runs-on: ubuntu-22.04
	container: alpine:latest
	steps:
	# Git is required so that actions/checkout does a proper Git checkout.
	- name: Install Git in container
	run: \|
	apk update
	apk add git
	git config --global --add safe.directory "$GITHUB_WORKSPACE"
	# Checks-out the repository under $GITHUB_WORKSPACE.
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0
	submodules: 'recursive'
	- name: Install packages
	run: \|
	apk update
	apk add cmake g++ git make
	- name: Build statically linked binaries
	run: \|
	cd "$GITHUB_WORKSPACE"
	mkdir build-static
	cd build-static
	cmake ../ -DENABLE_LTO=ON -DENABLE_STATIC_LINKING=ON
	# Only build the executable, no tests.
	cmake --build . -j2 --target sha256
	- name: Collect files
	run: \|
	mkdir -p "$GITHUB_WORKSPACE"/artifacts
	cd "$GITHUB_WORKSPACE"
	cp build-static/sha256/sha256 artifacts/
	cp ReadMe.de.txt artifacts/
	cp ReadMe.en.txt artifacts/
	cp ChangeLog.md artifacts/
	cp LICENSE artifacts/
	VERSION=$(git describe --always)
	mv artifacts sha256_$VERSION
	tar czf sha256_${VERSION}_linux-amd64-generic.tar.gz sha256_$VERSION
	- name: Upload artifact
	uses: actions/upload-artifact@v4
	with:
	name: sha256_linux-amd64-generic
	path: \|
	sha256_*_linux-amd64-generic.tar.gz

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