Change base image to ghcr.io/pranavanba/rocker-sage to use frozen versions of synapse clients #6

	# Workflow derived from https://github.com/r-lib/actions/tree/master/examples
	# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help

	name: Build and publish Docker image

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

	env:
	REGISTRY: ghcr.io
	IMAGE_PATH: ghcr.io/${{ github.repository }}

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

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

	- name: Log in to the Container registry
	uses: docker/login-action@v2.1.0
	if: github.event_name != 'pull_request'
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4.1.1
	with:
	images: ${{ env.IMAGE_PATH }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v3.2.0
	with:
	context: .
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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