chore: add crc-builder spec #1

	name: crc-builder-oci-builder

	on:
	push:
	# If release-info is not changed we may override a version
	tags: [ '*' ]
	paths: [ '.github/workflows/crc-builder/release-info' ]
	pull_request:
	branches: [ main ]
	paths: [ 'crc-builder/*', '.github/workflows/crc-builder' ]

	jobs:
	build:
	name: build
	runs-on: ubuntu-24.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Prepare runner
	shell: bash
	run: \|
	sudo apt-get install -y qemu-user-static

	- name: Build image for PR
	if: ${{ github.event_name == 'pull_request' }}
	env:
	CRC_BUILDER: ghcr.io/crc-org/ci-crc-builder
	CRC_BUILDER_V: pr-${{ github.event.number }}
	run: \|
	make crc-builder-oci-build
	CRC_BUILDER_SAVE=crc-builder make crc-builder-oci-save
	echo "CRC_BUILDER=${SNC_RUNNER}" >> "$GITHUB_ENV"
	echo "CRC_BUILDER_V=${SNC_RUNNER_V}" >> "$GITHUB_ENV"

	- name: Build image for Release
	if: ${{ github.event_name == 'push' }}
	run: \|
	make crc-builder-oci-build
	CRC_BUILDER_SAVE=crc-builder make crc-builder-oci-save
	# Get values from release-info
	CRC_BUILDER ?= $(sed -n 1p crc-builder/release-info)
	CRC_BUILDER_V ?= v$(sed -n 2p crc-builder/release-info)
	echo "CRC_BUILDER=${CRC_BUILDER}" >> "$GITHUB_ENV"
	echo "CRC_BUILDER_V=${CRC_BUILDER_V}" >> "$GITHUB_ENV"

	- name: Create image metadata
	run: \|
	echo ${{ env.CRC_BUILDER }}:${{ env.CRC_BUILDER_V }} > crc-builder-info
	echo ${{ github.event_name }} > crc-builder-build-event

	- name: Upload crc-builder
	uses: actions/upload-artifact@v4
	with:
	name: crc-builder
	path: crc-builder*

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