Docker 🔄️ #276

	#
	# 🛑 Think twice before editing this file! 🛑
	# ⚠️ This file is maintained via https://github.com/IanStorm/dev-settings-sync. ⚠️
	#
	name: Docker

	on:
	push:
	branches:
	- main
	schedule:
	- cron: '0 22 * * 5' # weekly, i.e. every Friday at 10pm

	env:
	DOCKERHUB_USERNAME: ianstorm

	jobs:
	docker-job:
	runs-on: Ubuntu-22.04

	steps:
	- uses: actions/checkout@v3

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v2

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2

	- name: Log into registry
	run: echo "${{ secrets.DOCKERHUB_TOKEN }}" \| docker login -u $DOCKERHUB_USERNAME --password-stdin

	- name: Docker buildx and push
	run: \|
	IMAGE_ID=${{ github.repository }}

	# Change all uppercase to lowercase
	IMAGE_ID=$(echo $IMAGE_ID \| tr '[A-Z]' '[a-z]')

	# Strip git ref prefix from version
	VERSION=$(echo "${{ github.ref }}" \| sed -e 's,./$.$,\1,')

	# Strip "v" prefix from tag name
	[[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION \| sed -e 's/^v//')

	# Use Docker `latest` tag convention
	[ "$VERSION" == "main" ] && VERSION=latest

	echo IMAGE_ID=$IMAGE_ID
	echo VERSION=$VERSION

	docker buildx build \
	--platform linux/amd64,linux/arm/v7 \
	--output "type=image,push=true" \
	--tag $IMAGE_ID:$VERSION \
	--file Dockerfile \
	.

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