Transition to `hip-cargo` format #13

	name: Publish Container

	on:
	push:
	tags:
	- 'v..*'
	branches:
	- main
	pull_request:
	branches:
	- main
	workflow_dispatch:

	# Cab generation is handled by pre-commit hooks locally.
	# This workflow only builds and pushes container images so users can test
	# hotfixes using stimela (which pulls images specified in cab definitions).

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

	jobs:
	publish-container:
	runs-on: ubuntu-latest
	permissions:
	packages: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v6

	- name: Log in to Container Registry
	uses: docker/login-action@v3
	with:
	registry: ${{ env.REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Extract metadata for container
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
	tags: \|
	# For version tags: v1.2.3 -> 1.2.3, 1.2
	type=semver,pattern={{version}}
	type=semver,pattern={{major}}.{{minor}}
	# For PRs: use branch name (e.g., ghcr.io/user/repo:feature-branch)
	type=raw,value=${{ github.head_ref }},enable=${{ github.event_name == 'pull_request' }}
	# For main branch: use 'latest'
	type=raw,value=latest,enable={{is_default_branch}}

	- name: Build and push Docker image
	uses: docker/build-push-action@v6
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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