add workflow and update dockerfile for nightly docker #3

	name: Build and Publish Docker

	on:
	push:
	branches:
	- docker-nightly

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	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: Login to DockerHub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}
	- name: Free Disk Space (Ubuntu)
	uses: jlumbroso/free-disk-space@main
	with:
	# this might remove tools that are actually needed,
	# if set to "true" but frees about 6 GB
	tool-cache: false

	# all of these default to true, but feel free to set to
	# "false" if necessary for your workflow
	android: true
	dotnet: true
	haskell: true
	large-packages: true
	docker-images: false
	swap-storage: true
	-
	name: Build and push with rdma (nightly)
	uses: docker/build-push-action@v3
	with:
	context: ./docker/rdma/
	push: true
	tags: dptechnology/unicore:nightly-rdma

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