Add support for mijn.host DNS challenge #2877

	name: Shellcheck
	on:
	push:
	branches:
	- '*'
	paths:
	- '**.sh'
	- '.github/workflows/shellcheck.yml'
	pull_request:
	branches:
	- dev
	paths:
	- '**.sh'
	- '.github/workflows/shellcheck.yml'

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true


	jobs:
	ShellCheck:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Shellcheck
	run: sudo apt-get install -y shellcheck
	- name: DoShellcheck
	run: shellcheck -V && shellcheck -e SC2181 -e SC2089 */.sh && echo "shellcheck OK"

	shfmt:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install shfmt
	run: curl -sSL https://github.com/mvdan/sh/releases/download/v3.1.2/shfmt_v3.1.2_linux_amd64 -o ~/shfmt && chmod +x ~/shfmt
	- name: shfmt
	run: ~/shfmt -l -w -i 2 . ; git diff --exit-code && echo "shfmt OK"

Provide feedback