chore: add files to sync

Author: shmileee

.github/files-sync-config.yaml

@@ -0,0 +1,13 @@
+---
+settings:
+  pull_request:
+    reviewers:
+      - "shmileee"
+    labels:
+      - "auto-sync"
+
+patterns:
+  - files:
+      - .markdownlintrc
+    repositories:
+      - devops-roast/containers

.markdownlintrc

@@ -0,0 +1,20 @@
+{
+  "default": true,
+  "first-header-h1": false,
+  "first-line-h1": false,
+  "line_length": false,
+  "no-multiple-blanks": false,
+  "fenced-code-language": true,
+  "no-duplicate-header": {
+    "siblings_only": true
+  },
+  "code-block-style": {
+    "style": "fenced"
+  },
+  "MD033": {
+    "allowed_elements": [
+      "details",
+      "summary"
+    ]
+  }
+}