Bump actions/checkout from 3 to 4 #6

	---
	name: Build and publish container in development

	on:
	# cron job to trigger the build on any push to main
	pull_request:
	branches:
	- main
	types: [opened, synchronize, reopened]

	permissions:
	contents: write

	jobs:
	docker:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout Repository
	uses: actions/checkout@v4

	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3


	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3


	- name: Login to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKER_HUB_USERNAME }}
	password: ${{ secrets.DOCKER_HUB_TOKEN }}

	- name: Get todays date
	id: date
	run: echo date=$(date +%Y-%m-%d) >> $GITHUB_OUTPUT

	- name: Build and push
	uses: docker/build-push-action@v5
	with:
	context: "{{defaultContext}}:pihole-unbound/"
	platforms: linux/arm/v7,linux/arm64/v8,linux/amd64
	push: true
	tags: aleksanderbl/pihole-unbound:dev-pr-${{ github.event.number }}-${{ steps.date.outputs.date }}

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