Bump actions/checkout from 4 to 5 #54

	name: ci·docker

	on:
	pull_request:
	paths:
	- docker/Dockerfile.*
	- .github/workflows/ci.docker.yml

	concurrency:
	group: ci/docker/${{ github.ref }}
	cancel-in-progress: true

	permissions:
	contents: read
	packages: write

	jobs:
	go:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	variety:
	- archlinux
	- busybox
	- debian
	- ubuntu
	steps:
	- uses: actions/checkout@v5

	- uses: robinraju/release-downloader@v1.12
	with:
	fileName: pkgx-*+linux+x86-64.tar.gz
	latest: true

	- run: \|
	mkdir products
	tar xzf pkgx*.tar.gz
	mv pkgx products/$(uname -m)
	curl https://pkgxdev.github.io/pkgm/pkgm.ts -o products/pkgm

	- run:
	docker build
	--tag pkgxdev/${{ matrix.variety }}
	--file docker/Dockerfile.${{ matrix.variety }}
	.

	- run: \|
	cat <<EoD> Dockerfile
	FROM pkgxdev/${{ matrix.variety }}
	RUN pkgx --version
	RUN if git --version; then exit 1; fi
	RUN pkgx git --version
	RUN pkgm --version
	RUN pkgm install git
	RUN if ! git --version; then exit 2; fi
	RUN pkgx node --eval "console.log(1)"
	EoD

	docker build --file Dockerfile .

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