Merge branch 'develop' of github.com:matrix-org/sytest into dendrite #917

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

	name: Build and deploy Dendrite docker images

	on:
	push:
	branches: ["dendrite"]
	workflow_dispatch:

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build-dependent-images:
	name: "Build sytest-${{ matrix.dockerfile }}:${{ matrix.sytest_image_tag }}"
	runs-on: ubuntu-latest
	strategy:
	matrix:
	include:
	- sytest_image_tag: buster
	dockerfile: dendrite
	tags: "matrixdotorg/sytest-dendrite:latest"
	build_args: "SYTEST_IMAGE_TAG=buster"

	steps:
	- name: Set up QEMU
	id: QEMU
	uses: docker/setup-qemu-action@v2

	- name: Set up Docker Buildx
	id: buildx
	uses: docker/setup-buildx-action@v2

	- name: Inspect builder
	run: docker buildx inspect

	- name: Log in to DockerHub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKER_HUB_USERNAME }}
	password: ${{ secrets.DOCKER_HUB_TOKEN }}

	- name: Build and push
	uses: docker/build-push-action@v4
	with:
	pull: true
	push: true
	platforms: linux/amd64,linux/arm64
	labels: "gitsha1=${{ github.sha }}"
	file: docker/${{ matrix.dockerfile }}.Dockerfile
	build-args: ${{ matrix.build_args }}
	tags: ${{ matrix.tags }}

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