Introduce `@SwiftSyntaxRule` & `@Fold` macros (#5253) #1090

	name: docker

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

	jobs:
	build:
	runs-on: ubuntu-20.04

	steps:
	- uses: actions/checkout@v3

	- name: Extract DOCKER_TAG using tag name
	if: startsWith(github.ref, 'refs/tags/')
	run: \|
	echo "DOCKER_TAG=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV

	- name: Use default DOCKER_TAG
	if: startsWith(github.ref, 'refs/tags/') != true
	run: \|
	echo "DOCKER_TAG=latest" >> $GITHUB_ENV

	- name: Set lowercase repository name
	run: \|
	echo "REPOSITORY_LC=${REPOSITORY,,}" >>${GITHUB_ENV}
	env:
	REPOSITORY: '${{ github.repository }}'

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

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

	- uses: docker/build-push-action@v2
	with:
	push: true
	tags: ghcr.io/${{ env.REPOSITORY_LC }}:${{ env.DOCKER_TAG }}

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