add 27.1 and 28.0, use alpine:3.20, use actions/checkout@v4 #177

	name: Build bitcoind on push, or PR to master

	env:
	APP: bitcoind

	on:
	push:
	branches: [ 'master' ]
	pull_request:
	branches: [ 'master' ]

	jobs:
	build:
	name: Build bitcoind
	runs-on: ubuntu-22.04

	strategy:
	fail-fast: false
	matrix:
	subver:
	- '24.0'
	- '25.1'
	- '26.1'
	- '27.0'
	- '27.1'
	- '28.0'

	arch:
	- amd64
	- arm32v7
	- arm64v8

	env:
	QEMU_VERSION: v5.0.0
	DOCKER_BUILDKIT: 1

	steps:
	- uses: actions/checkout@v4

	- name: Register self-compiled qemu
	if: matrix.arch != 'amd64'
	run: docker run --rm --privileged "meedamian/simple-qemu:$QEMU_VERSION-${{ matrix.arch }}" -p yes

	- name: Build ${{ env.APP }}
	run: >
	docker build "${{ matrix.subver }}/"
	--build-arg "ARCH=${{ matrix.arch }}"
	--tag "$APP"

	- name: Show built image details
	run: docker images "$APP"

	- name: Run sanity checks
	env:
	DIR: /usr/local/bin
	MINOR: ${{ matrix.subver }}
	run: \|
	run() {
	ENTRYPOINT="${1:-$APP}"; shift
	ARGS=${*:-"--version"}

	printf "\n$ %s %s\n" "$ENTRYPOINT" "$ARGS"
	docker run --rm --entrypoint "$ENTRYPOINT" "$APP" $ARGS
	}

	docker inspect "$APP" \| jq '.'
	printf "\n"

	run bitcoind \| head -n 1
	run bitcoin-cli
	run bitcoin-tx --help \| head -n 1
	run bitcoin-wallet --help \| head -n 1

	run uname -a
	run cat /etc/os-release
	run sha256sum "$DIR/bitcoind" "$DIR/bitcoin-cli"

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