Add nightly build action of demo pipeline #4

	name: Build and push demo pipeline Image

	on:
	schedule:
	- cron: '0 4 * * *' # 4 AM UTC every day

	# execute on every PR made targeting the branches bellow
	pull_request:
	branches:
	- master
	- develop # can be removed on master merge
	paths: # we only include paths critical for building to avoid unnecessary runs
	- src/**
	- include/**
	- scripts/cmake/**
	- test/**
	- .github/workflows/**
	- doc/**
	- runtime/**
	- docker/**

	# execute on every push made targeting the branches bellow
	push:
	branches:
	- master
	- develop # can be removed on master merge
	paths: # we only include paths critical for building to avoid unnecessary runs
	- src/**
	- include/**
	- scripts/cmake/**
	- test/**
	- .github/workflows/**
	- doc/**
	- runtime/**
	- docker/**
	jobs:
	build-and-push-demo:
	runs-on: ubuntu-22.04

	permissions:
	packages: write

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

	- name: Get current date
	id: date
	run: echo "DATE=$(date +'%Y%m%d')" >> $GITHUB_ENV

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

	- name: Log in to Docker Hub
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push Docker image
	uses: docker/build-push-action@v4
	with:
	context: .
	file: docker/Dockerfile.linux
	push: true
	target: demo_pipeline
	tags: \|
	ghcr.io/${{ github.repository_owner }}/qc-framework:demo-pipeline-${{ env.DATE }}
	ghcr.io/${{ github.repository_owner }}/qc-framework:demo-pipeline-latest

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