Create lint-checks.yaml

.github/workflows/lint-checks.yaml

@@ -0,0 +1,58 @@
+name: Lint / Syntax checks
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  hadolint:
+    runs-on: ubuntu-latest
+    container: ghcr.io/hadolint/hadolint:latest-alpine
+    steps:
+      - name: ↩️ Checkout
+        uses: actions/checkout@v2
+
+      - name: 📂 Detect chanced files
+        id: filter
+        uses: dorny/paths-filter@v2.9.0
+        with:
+          list-files: 'shell'
+          filters: |
+            dockerfile:
+              - '**/Dockerfile'
+      - name: 🔎 Run hadolint
+        if: steps.filter.outputs.dockerfile == 'true'
+        run: hadolint ${{ steps.filter.outputs.dockerfile_files }}
+
+  shellcheck:
+    runs-on: ubuntu-latest
+    steps:
+      - name: ↩️ Checkout
+        uses: actions/checkout@v2
+
+      - name: 📂 Detect chanced files
+        id: filter
+        uses: dorny/paths-filter@v2.9.0
+        with:
+          list-files: 'shell'
+          filters: |
+            shell:
+              - '**/*.sh'
+              - '**/cont-init.d/*'
+              - '**/services.d/*'
+      - name: 🔎 Run ShellCheck
+        if: steps.filter.outputs.shell == 'true'
+        uses: ludeeus/action-shellcheck@1.1.0
+        with:
+          additional_files: ${{ steps.filter.outputs.shell_files }}
+
+  markdownlint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: ↩️ Checkout
+        uses: actions/checkout@v2
+
+      - name: 🔎 Run markdownlint
+        uses: nosborn/github-action-markdown-cli@v1.1.1
+        with:
+          files: .