Add ability to download tar.gz of commit/branch/tag #179

	name: Docker

	on:
	schedule:
	- cron: '45 20 * * *'
	push:
	branches: [ main ]

	env:
	# Use docker.io for Docker Hub if empty
	REGISTRY: ghcr.io
	# github.repository as <account>/<repo>
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2
	- name: Setup Docker buildx
	uses: docker/setup-buildx-action@79abd3f86f79a9d68a23c75a09a9a85889262adf
	- name: Log into registry ${{ env.REGISTRY }}
	if: github.event_name != 'pull_request'
	uses: docker/login-action@28218f9b04b4f3f62068d7b6ce6ca5b26e35336c
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	- name: Build and push Docker image
	id: build-and-push
	uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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