Update 2016-12-15-matelight.md #2

	name: GHCR Latest

	on:
	push:
	branches:
	- main

	jobs:
	build-and-push:
	runs-on: ubuntu-latest

	steps:
	- name: Check out the repo
	uses: actions/checkout@v2

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1

	- name: Log in to GitHub Container Registry
	uses: docker/login-action@v1
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push
	uses: docker/build-push-action@v2
	with:
	push: true
	tags: ghcr.io/${{ github.repository }}:build-${{github.run_number}}

	- name: Image digest
	run: echo ${{ steps.build-and-push.outputs.digest }}

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