Apply suggestion to quote docker image name from @Copilot #5

	name: Build and Push Docker Images

	# CI builds pull all model checkpoints (~10 GB) from Docker Hub automatically via:
	# COPY --from=diffuseproject/sampleworks-checkpoints:latest /checkpoints/ /checkpoints/
	# No checkpoint files are needed on the CI runner. The checkpoints base image is
	# pre-built and pushed from the GPU server. See Dockerfile comments for details.

	on:
	push:
	branches: [main]
	paths:
	- 'pyproject.toml'
	- 'pixi.lock'
	- 'src/**'
	- 'scripts/**'
	- 'Dockerfile'
	- 'docker-entrypoint.sh'
	- '.github/workflows/docker.yml'
	workflow_dispatch:

	env:
	DOCKERHUB_ORG: diffuseproject
	IMAGE_NAME: sampleworks

	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	contents: read

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Login to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Build and push Docker image
	id: build-push
	uses: docker/build-push-action@v5
	with:
	context: .
	push: true
	tags: \|
	${{ env.DOCKERHUB_ORG }}/${{ env.IMAGE_NAME }}:latest
	${{ env.DOCKERHUB_ORG }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
	cache-from: type=gha
	cache-to: type=gha,mode=max
	provenance: false

	- name: Image digest
	run: echo "Image pushed with digest ${{ steps.build-push.outputs.digest }}"

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