linters: Add hadolint Dockerfile linter

This adds the hadolint [1] Dockerfile linter to the IPDK CI.

[1] https://github.com/hadolint/hadolint

Signed-off-by: Kyle Mestery <[email protected]>

Author: mestery

.github/workflows/markdown.yml .github/workflows/linters.md

@@ -1,4 +1,4 @@
-name: MarkdownLint
+name: Linters
 
 on:
   push:
@@ -16,3 +16,12 @@ jobs:
       - uses: avto-dev/[email protected]
         with:
           args: './*.md'
+
+  docker-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: hadolint/[email protected]
+        with:
+          recursive: true
+          ignore: DL3041