feat: setup hadolint (#2)

Author: pranc1ngpegasus

.github/workflows/lint.yaml

@@ -0,0 +1,13 @@
+name: Lint
+on:
+  pull_request:
+jobs:
+  hadolint:
+    name: hadolint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: reviewdog/action-hadolint@v1
+        with:
+          reporter: github-pr-review
+          hadolint_flags: Dockerfile