0.15.0 #12

	# GitHub actions workflow which builds and publishes the docker images.

	name: Build and push docker images

	on:
	push:
	tags: ["v*"]
	workflow_dispatch:

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Set up QEMU
	id: qemu
	uses: docker/setup-qemu-action@v1
	with:
	platforms: arm64

	- name: Set up Docker Buildx
	id: buildx
	uses: docker/setup-buildx-action@v1

	- name: Inspect builder
	run: docker buildx inspect

	- name: Log in to DockerHub
	uses: docker/login-action@v1
	with:
	username: ${{ secrets.DOCKER_HUB_USERNAME }}
	password: ${{ secrets.DOCKER_HUB_TOKEN }}

	- name: Calculate docker image tags
	id: set-tag
	uses: docker/metadata-action@v3
	with:
	images: matrixdotorg/sygnal
	tags: \|
	type=ref,event=tag

	# we explicitly check out the repository (and use `context: .` in buildx)
	# because we need to preserve the git metadata so that setuptools_scm
	# (part of build system config in pyproject.toml) can deduce the package version.
	# See: https://github.com/marketplace/actions/build-and-push-docker-images#path-context
	- name: Checkout
	uses: actions/checkout@v3

	- name: Build and push all platforms
	uses: docker/build-push-action@v2
	with:
	context: .
	push: true
	labels: "gitsha1=${{ github.sha }}"
	tags: "${{ steps.set-tag.outputs.tags }}"
	file: "docker/Dockerfile"
	platforms: linux/amd64,linux/arm64

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