From a64db2e8023b39075fb50cc2ce5f00da17bbe089 Mon Sep 17 00:00:00 2001
From: Michael Keppler <Michael.Keppler@gmx.de>
Date: Sat, 23 Sep 2023 12:18:47 +0200
Subject: [PATCH] infra: add github actions linter

Taken from the main checkstyle repository.
---
 .github/workflows/actionlint.yml | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 .github/workflows/actionlint.yml

diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
new file mode 100644
index 000000000..affa8ae1a
--- /dev/null
+++ b/.github/workflows/actionlint.yml
@@ -0,0 +1,26 @@
+name: Lint workflows of GitHub Actions
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - '.github/workflows/**'
+  pull_request:
+    branches:
+      - '*'
+    paths:
+      - '.github/workflows/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  actionlint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Check workflow files
+        uses: docker://rhysd/actionlint:latest