fix(txt-suffix): avoid crash on domain without dot #810

	name: Build all images

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

	permissions:
	contents: read # to fetch code (actions/checkout)

	jobs:

	build:
	permissions:
	contents: read # to fetch code (actions/checkout)
	checks: write # to create a new check based on the results (shogo82148/actions-goveralls)

	name: Build
	runs-on: ubuntu-latest
	steps:

	- name: Check out code into the Go module directory
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

	- name: Set up Go 1.x
	uses: actions/setup-go@v5
	with:
	go-version-file: go.mod
	id: go

	- name: Install CI
	run: \|
	go get -v -t -d ./...

	- name: Test
	run: make build.image/multiarch

Provide feedback