Build on tags #2

	name: Build on tags

	on:
	push:
	tags: [ '*']

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

	jobs:
	build:
	runs-on: ubuntu-latest

	#--- Set permissions to ephemeral GITHUB_TOKEN for job actions
	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout and download repository to workflow runner
	uses: actions/checkout@v3

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

	- name: Login to github container registry
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	#See https://stackoverflow.com/a/70468025/1484823 about fetching and formatting tags in current commit
	- name: Docker meta
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Build and push image to github container registry
	uses: docker/build-push-action@v3
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.labels }}

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