Update actions/checkout action to v4 #46

	name: webapp-dev
	on:
	push
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

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

	- name: Login to the GitHub Container Registry
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ secrets.GHCR_USER }}
	password: ${{ secrets.GHCR_TOKEN }}

	- name: Build and push image
	uses: docker/build-push-action@v4
	with:
	push: true
	context: .
	file: ./Dockerfile
	tags: \|
	ghcr.io/netbootxyz/${{ github.workflow }}:latest
	ghcr.io/netbootxyz/${{ github.workflow }}:${{ github.sha }}

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