Accept underscores in temp filenames (#57) #51

	name: Publish

	on: push

	env:
	# Use docker.io for Docker Hub if empty
	REGISTRY: ghcr.io
	# github.repository as <account>/<repo>
	IMAGE_NAME: ${{ github.repository }}

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

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	# Login against a Docker registry
	# https://github.com/docker/login-action
	- name: Log into registry ${{ env.REGISTRY }}
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Extract metadata (tags, labels) for Docker
	# https://github.com/docker/metadata-action
	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	# Setup QEMU emulator to build multi-arch images
	# https://github.com/docker/setup-qemu-action
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

	# Configure Buildx for Docker build
	# https://github.com/docker/setup-buildx-action
	- name: Set up Buildx
	uses: docker/setup-buildx-action@v3

	# Build and push Docker image with Buildx
	# https://github.com/docker/build-push-action
	- name: Build and push Docker image
	uses: docker/build-push-action@v5
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	platforms: 'linux/amd64,linux/arm64'

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