improve #75

	name: diffusers-docker-cd
	on:
	push:
	branches:
	- test-raph
	paths:
	- ".github/workflows/python-api-diffusers-cd.yaml"
	- "docker_images/diffusers/**"
	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	packages: write
	contents: read
	steps:
	- name: Checkout
	uses: actions/checkout@v4.1.7
	- name: Inject slug/short variables
	uses: rlespinasse/github-slug-action@v4.5.0
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3.6.1
	- name: downcase REPO
	run: \|
	echo "CONTAINER_REPO=${GITHUB_REPOSITORY,,}" >>${GITHUB_ENV}
	- name: Docker meta
	id: meta
	uses: docker/metadata-action@v5.5.1
	with:
	images: ghcr.io/${{ env.CONTAINER_REPO }}
	# Is this step useful ? Do we really support multi arch / cross compiling ?
	- name: Set up QEMU
	uses: docker/setup-qemu-action@v3.2.0
	- name: Login to GitHub Container Registry
	uses: docker/login-action@v3.3.0
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	# - name: Set up Python ${{ matrix.python-version }}
	# uses: actions/setup-python@v5.1.1
	# with:
	# python-version: "3.8"
	# - name: Install dependencies
	# run: \|
	# pip install --upgrade pip
	- name: Build and push Docker image
	id: build-and-push
	uses: docker/build-push-action@v6.5.0
	with:
	context: docker_images/diffusers
	push: false
	platforms: 'linux/amd64'
	tags: ghcr.io/${{ env.CONTAINER_REPO }}/diffusers-${{ env.GITHUB_SHA_SHORT \|\| steps.meta-pr.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels \|\| steps.meta-pr.outputs.labels }}
	# TODO: cache-from/cache-to

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