Feature: functions to retrieve numbers of packages, cores, and pus #12

	name: Build image

	on:
	push:
	branches:
	- main
	paths:
	- 'requirements/*'
	- 'docker/dockerfile'
	pull_request:
	branches:
	- main
	paths:
	- 'requirements/*'
	- 'docker/dockerfile'

	jobs:

	set-vars:
	uses: ./.github/workflows/set-vars.yml

	build-image:
	needs: [set-vars]
	runs-on: [ubuntu-latest]
	container:
	image: docker:latest
	permissions:
	packages: write
	steps:
	- name: Checkout code.
	uses: actions/checkout@v4

	- name: Set up QEMU.
	uses: docker/setup-qemu-action@v3

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

	- name: Login to GitHub Container Registry.
	uses: docker/login-action@v3
	with:
	registry: ${{ needs.set-vars.outputs.CI_REGISTRY }}
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push.
	uses: docker/build-push-action@v5
	with:
	context: .
	platforms: linux/amd64,linux/arm64
	push: ${{ github.ref == 'refs/heads/main' }}
	file: docker/dockerfile
	tags: ${{ needs.set-vars.outputs.CI_IMAGE }}
	cache-from: type=registry,ref=${{ needs.set-vars.outputs.CI_IMAGE }}
	cache-to: type=inline
	labels: "org.opencontainers.image.source=${{ github.repositoryUrl }}"

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