chore(ci): add OSSF Scorecard workflow #359

	name: Docker

	on:
	push:
	# Publish `master` as Docker `latest` image.
	branches:
	- master

	# Publish `v1.2.3` tags as releases.
	tags:
	- v*
	pull_request:
	branches: [ master ]

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

	jobs:
	push:
	permissions:
	packages: write
	contents: read
	runs-on: ubuntu-latest

	steps:
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	# Extract metadata (tags, labels) for Docker
	# https://github.com/docker/metadata-action
	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	# This action can be useful if you want to add emulation
	# support with QEMU to be able to build against more platforms.
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v2

	# This action will create and boot a builder using
	# by default the docker-container builder driver.
	# Recommended for build multi-platform images, export cache, etc.
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2

	- name: Log into ${{ env.REGISTRY }}
	if: github.event_name != 'pull_request'
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	# Build and push Docker image with Buildx (don't push on PR)
	# https://github.com/docker/build-push-action
	- name: Build and push Docker image
	uses: docker/build-push-action@v4
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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