Add hadolint CI for Dockerfile linting

.github/workflows/hadolint_dockerfiles.yml

@@ -0,0 +1,47 @@
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+name: hadolint dockerfiles
+
+on:
+  # will be triggered on PR events
+  pull_request:
+    types:
+      - opened
+      - synchronize
+    paths:
+      - "**/Dockerfile*"
+      - ".github/workflows/hadolint_dockerfiles.yml"
+  push:
+    branches:
+      - main
+      - "dev/**"
+    paths:
+      - "**/Dockerfile*"
+      - ".github/workflows/hadolint_dockerfiles.yml"
+  # allow to be triggered manually
+  workflow_dispatch:
+
+# Cancel any in-flight jobs for the same PR/branch so there's only one active
+# at a time
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  run-hadolint-on-dockerfiles:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      # on default, hadolint will fail on warnigns and errors
+      - name: Run hadolint on dockerfiles
+        run: |
+          docker pull hadolint/hadolint:latest-debian
+          find . -name "*Dockerfile*" | while read dockerfile; do
+            echo "run hadolint on $dockerfile:"
+            docker run --rm -i hadolint/hadolint:latest-debian hadolint - <"$dockerfile"
+            echo "successful"
+          done