Update BLU.py #90

	name: Create and publish a Docker image

	on:
	push:
	branches: ['master']

	env:
	REGISTRY: ghcr.io
	IMAGE_NAME: ${{ github.repository }}

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write

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

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

	- name: Log in to the Container registry
	uses: docker/login-action@v2
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v4
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

	- name: Get lowercase repo name
	id: get_lowercase_repo_name
	run: \|
	REPO_NAME=${{ env.IMAGE_NAME }}
	echo "LOWER_CASE_REPO_NAME=${REPO_NAME,,}" >> $GITHUB_ENV

	- name: Get short commit id
	id: get_short_commit_id
	run: \|
	echo "SHA_SHORT=$(git rev-parse --short HEAD)" >> $GITHUB_ENV

	- name: Build and push Docker image
	uses: docker/build-push-action@v3
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}, ${{ env.REGISTRY }}/${{ env.LOWER_CASE_REPO_NAME }}:${{ env.SHA_SHORT }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max

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