Merge pull request #634 from getsentry/indygreg-pythons #76

	name: image
	on:
	pull_request:
	paths: [docker/*, .github/workflows/image.yml]
	push:
	branches: [main, test-me-*]
	paths: [docker/*, .github/workflows/image.yml]

	concurrency:
	# serialize runs on the default branch
	group: ${{ github.event_name == 'push' && github.workflow \|\| github.sha }}${{ github.workflow }}

	jobs:
	image:
	strategy:
	matrix:
	arch: [amd64, arm64]
	env:
	TARGET_TAG: ghcr.io/getsentry/pypi-manylinux-${{ matrix.arch }}-ci
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: enable cross build
	run: docker run --rm --privileged tonistiigi/binfmt --install arm64
	if: matrix.arch == 'arm64'
	- name: build
	run: \|
	args=()
	if docker pull -q "$TARGET_TAG"; then
	args+=(--cache-from "$TARGET_TAG")
	fi
	docker buildx build \
	"${args[@]}" \
	--platform linux/${{ matrix.arch }} \
	--tag "${TARGET_TAG}:${GITHUB_SHA}" \
	docker
	docker tag "${TARGET_TAG}:${GITHUB_SHA}" "${TARGET_TAG}:latest"
	- name: push
	run: \|
	docker login --username '${{ github.actor }}' --password-stdin ghcr.io <<< '${{ secrets.GITHUB_TOKEN }}'
	docker push "${TARGET_TAG}:${GITHUB_SHA}"
	docker push "${TARGET_TAG}:latest"
	if: github.event_name != 'pull_request'

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