Add Alpine 3.20 #23

	name: Build & publish container

	on:
	push:
	branches: [ main ]
	workflow_dispatch: {}

	concurrency: build

	env:
	CI_TOOLS_SETUP: https://raw.githubusercontent.com/SGSGermany/ci-tools/main/setup.sh

	defaults:
	run:
	shell: bash -eu -o pipefail {0}

	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

	strategy:
	matrix:
	BASE_IMAGE:
	- docker.io/alpine:3.17
	- docker.io/alpine:3.18
	- docker.io/alpine:3.19
	- docker.io/alpine:3.20

	env:
	REGISTRY: ghcr.io
	OWNER: sgsgermany
	IMAGE: alpine
	BASE_IMAGE: ${{ matrix.BASE_IMAGE }}

	steps:
	- name: Setup CI tools
	run: \|
	. <(curl -fsS -L "$CI_TOOLS_SETUP" \| bash -s ~/ci-tools)
	echo "CI_TOOLS=$CI_TOOLS" \| tee -a "$GITHUB_ENV"
	echo "CI_TOOLS_PATH=$CI_TOOLS_PATH" \| tee -a "$GITHUB_ENV"

	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Log into container registry ${{ env.REGISTRY }}
	uses: redhat-actions/podman-login@v1
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Generate container image tags
	run: \|
	source <(./tags.sh "$GITHUB_RUN_ID.$GITHUB_RUN_NUMBER")
	echo "MILESTONE=$MILESTONE" \| tee -a "$GITHUB_ENV"
	echo "VERSION=$VERSION" \| tee -a "$GITHUB_ENV"
	echo "TAGS=$TAGS" \| tee -a "$GITHUB_ENV"

	- name: Build container image
	run: \|
	buildah unshare ./build.sh

	- name: Container image metadata
	run: \|
	podman image inspect "localhost/$IMAGE:${TAGS%% *}"

	- name: Push container image
	uses: redhat-actions/push-to-registry@v2
	with:
	image: ${{ env.IMAGE }}
	registry: ${{ env.REGISTRY }}/${{ env.OWNER }}
	tags: ${{ env.TAGS }}

Provide feedback