Merge pull request #3969 from NateCrawford/patch-2 #135

	name: Build and Push Docker image

	on:
	push:
	tags:
	- v[0-9]+.[0-9]+.[0-9]+
	- v[0-9]+.[0-9]+.[0-9]+.[0-9]+
	- v[0-9]+.[0-9]+.[0-9]+.itb.[0-9]+

	jobs:

	build:
	runs-on: ubuntu-latest
	if: startsWith(github.repository, 'opensciencegrid/')
	steps:
	- uses: actions/checkout@v3

	- name: Generate tag list
	id: generate-tag-list
	run: \|
	docker_repo=${GITHUB_REPOSITORY/opensciencegrid\/docker-/opensciencegrid/}
	tag_list=()
	for registry in hub.opensciencegrid.org docker.io; do
	for image_tag in latest "${GITHUB_REF##*/v}"; do
	tag_list+=("$registry/$docker_repo":"$image_tag")
	done
	done
	# This causes the tag_list array to be comma-separated below,
	# which is required for build-push-action
	IFS=,
	echo "taglist=${tag_list[*]}" >> $GITHUB_OUTPUT

	- name: Set up Docker Buildx
	uses: docker/[email protected]

	- name: Log in to Docker Hub
	uses: docker/[email protected]
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

	- name: Log in to OSG Harbor
	uses: docker/[email protected]
	with:
	registry: hub.opensciencegrid.org
	username: ${{ secrets.OSG_HARBOR_ROBOT_USER }}
	password: ${{ secrets.OSG_HARBOR_ROBOT_PASSWORD }}

	- name: Build and push Docker images
	uses: docker/build-push-action@v4
	with:
	context: .
	push: true
	tags: "${{ steps.generate-tag-list.outputs.taglist }}"

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