Move shell run commands from `action.yml` to a script, for use beyond… #18

	name: build-os
	on:
	pull_request:
	branches:
	- main
	paths-ignore:
	- '**/README.md'
	push:
	branches:
	- main
	paths-ignore:
	- '**/README.md'
	merge_group:
	workflow_dispatch:

	jobs:
	build:
	name: Build test image
	strategy:
	fail-fast: false
	matrix:
	destination:
	- name: implicit
	path: ''
	- name: explicit
	path: 'destination.img'
	- name: explicit-gz
	path: 'destination.img.gz'
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Make a Pifile for Pimod
	uses: 1arp/create-a-file-action@0.4.5
	with:
	file: cowsay.Pifile
	content: \|
	FROM https://downloads.raspberrypi.com/raspios_lite_arm64/images/raspios_lite_arm64-2024-03-15/2024-03-15-raspios-bookworm-arm64-lite.img.xz
	TO cowsay-image.img
	PUMP 8G

	# Install and test out cowsay:
	RUN apt-get update
	RUN apt-get install -y cowsay
	RUN /usr/games/cowsay "I'm running in a chroot!"

	- name: Build the image
	uses: Nature40/pimod@master
	with:
	pifile: cowsay.Pifile

	- name: Shrink the image
	id: shrink-image
	uses: ./
	with:
	image: cowsay-image.img
	destination: ${{ matrix.destination.path }}
	compress: gzip
	compress-parallel: true

	- name: Upload image to Job Artifacts
	uses: actions/upload-artifact@v4
	with:
	name: rpi-cowsay-${{ matrix.destination.name }}-arm64-latest
	path: ${{ steps.shrink-image.outputs.destination }}
	if-no-files-found: error
	retention-days: 0
	compression-level: 0
	overwrite: true

Provide feedback