fix(theme): correctly set default theme; add footer #34

	name: Create and publish a Docker image for the backend
	on:
	push:
	branches: ["main"]

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

	jobs:
	build-and-push-backend:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	packages: write
	attestations: write
	id-token: write
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Log in to the Container registry
	uses: docker/login-action@0d4c9c5ea7693da7b068278f7b52bda2a190a446
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}
	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@f7b4ed12385588c3f9bc252f0a2b520d83b52d48
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	- name: Build and push Docker image
	id: push
	uses: docker/build-push-action@1ca370b3a9802c92e886402e0dd88098a2533b12
	with:
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	- name: Generate artifact attestation
	uses: actions/attest-build-provenance@v1
	with:
	subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
	subject-digest: ${{ steps.push.outputs.digest }}
	push-to-registry: true

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