fix GTFS merging 🐛 #2

	name: build & publish Docker image

	on:
	push:
	tags:
	- '*'

	jobs:
	lint-test:
	name: lint & test
	uses: './.github/workflows/test.yml'

	build-publish:
	name: build & publish Docker image
	needs:
	- lint-test
	runs-on: ubuntu-latest
	permissions:
	packages: write
	steps:
	- name: checkout
	uses: actions/checkout@v4

	- name: log into the GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ github.token }}

	- name: compute Docker image OCI metadata from commit & repo
	id: docker-metadata
	uses: docker/metadata-action@v5
	with:
	labels: \|
	org.opencontainers.image.version=${{ github.ref_name }}

	- name: set up Docker buildx
	uses: docker/setup-buildx-action@v3
	- name: set up QEMU for cross-platform builds
	uses: docker/setup-qemu-action@v3

	- name: compute Docker image name
	run: \|
	# lower-case repo name
	echo "DOCKER_IMAGE=ghcr.io/${GITHUB_REPOSITORY,,}" >>${GITHUB_ENV}
	env:
	GITHUB_REPOSITORY: '${{ github.repository }}'

	- name: build and push Docker image
	uses: docker/build-push-action@v5
	with:
	push: true
	tags: \|
	${{ env.DOCKER_IMAGE }}:latest
	${{ env.DOCKER_IMAGE }}:${{ github.ref_name }}
	labels: ${{ steps.docker-metadata.outputs.labels }}
	platforms: linux/amd64,linux/arm64
	# https://docs.docker.com/build/ci/github-actions/cache/#cache-backend-api
	cache-from: type=gha
	cache-to: type=gha,mode=max

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