fix(Dockerfile): root image for github action #5

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by
	# separate terms of service, privacy policy, and support
	# documentation.

	# GitHub recommends pinning actions to a commit SHA.
	# To get a newer version, you will need to update the SHA.
	# You can also reference a tag or branch, but the action may change without warning.

	name: Create and publish a Docker image

	on:
	push:
	tags:
	- '*'
	branches:
	- 'main'
	- 'master'
	pull_request:
	branches:
	- master
	- main

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}
	IMAGE_VERSION: 0.3.0

	jobs:
	build-and-push-image:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-20.04
	context:
	- python/3.10-slim

	permissions:
	contents: read
	packages: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Log in to the Container registry
	uses: docker/[email protected]
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/[email protected]
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Build Docker image
	uses: docker/[email protected]
	with:
	context: ${{ matrix.context }}
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	build-args: SOURCEKNIGHT_VERSION=${{ env.IMAGE_VERSION }}

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