Add PR tests

Author: silug

.github/workflows/pr.yml

@@ -0,0 +1,26 @@
+---
+name: Pull Request Tests
+
+'on':
+  pull_request:
+    branches:
+      - main
+      - master
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  hadolint:
+    name: Lint Dockerfile
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+
+      - name: Run hadolint
+        uses: hadolint/hadolint-action@v3.3.0
+        with:
+          dockerfile: Dockerfile
+          failure-threshold: warning