doc: update README.md for demosoc removal #67

	name: Build Linux SDK Docker Image

	on:
	push:
	branches: [ dev* ]
	paths-ignore:
	- README.md
	- LICENSE
	- .gitlab-ci.yml
	- .gitignore
	pull_request:
	branches: [ dev* ]

	jobs:

	# This workflow contains a single job called "build"
	build:
	name: build docker image
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- name: Checkout Linux SDK Code
	uses: actions/checkout@v4
	with:
	submodules: false

	- name: Build Docker Image
	run: \|
	cd .github
	docker build . -f linuxsdk.Dockerfile -t linuxsdk:${{github.ref_name}} --build-arg BRANCH=${{github.ref_name}}
	docker images

	- name: Test Docker Image
	if: ${{ startsWith(github.ref_name, 'dev_') && github.event_name != 'pull_request' }}
	run: \|
	docker run -i linuxsdk:${{github.ref_name}} bash run_qemu.sh

	- name: Publish Docker Image
	if: ${{ github.event_name != 'pull_request' }}
	run: \|
	echo "Login to docker hub"
	docker login -u ${{ secrets.DOCKER_USER }} -p ${{ secrets.DOCKER_PWD }} docker.io
	DOCKER_REPO=docker.io/nucleisoftware/linuxsdk
	docker tag linuxsdk:${{github.ref_name}} ${DOCKER_REPO}:${{github.ref_name}}
	docker push ${DOCKER_REPO}:${{github.ref_name}}
	echo "Docker image is pushed to https://hub.docker.com/repository/docker/nucleisoftware/linuxsdk, tag ${{github.ref_name}}"

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