Publish Docker image to ghcr #7

	name: Publish Docker image to ghcr

	on:
	workflow_dispatch:

	push:
	branches: [ ros2 ]

	pull_request:
	types: [opened, reopened]
	branches: [ ros2 ]

	env:
	REGISTRY: ghcr.io
	REGISTRY_IMAGE: ${{ github.repository }}

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	ros_distro:
	# - rolling
	- humble
	# - iron

	permissions:
	contents: read
	packages: write

	steps:
	- name: Get current date
	id: date
	run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT

	- name: Checkout own repository
	uses: actions/checkout@v4
	with:
	submodules: true

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY_IMAGE }}

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v5
	with:
	context: .
	file: Dockerfile
	build-args: \|
	ROS_DISTRO=${{ matrix.ros_distro }}
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ env.REGISTRY }}/${{ env.REGISTRY_IMAGE }}-${{ matrix.ros_distro }}:${{ steps.date.outputs.date }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max
	platforms: linux/arm64,linux/amd64

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