Add validation

.rules/yamllint.yml

@@ -0,0 +1,42 @@
+# https://yamllint.readthedocs.io/en/stable/configuration.html#default-configuration
+---
+yaml-files:
+  - '*.yaml'
+  - '*.yml'
+  - '.yamllint'
+
+rules:
+  anchors:
+    forbid-undeclared-aliases: true
+    forbid-duplicated-anchors: true
+  braces: enable
+  brackets: enable
+  colons: enable
+  commas: enable
+  comments:
+    level: warning
+  comments-indentation:
+    level: warning
+  document-end:
+    level: warning
+  document-start:
+    level: warning
+  empty-lines: enable
+  empty-values: disable
+  float-values:
+    level: warning
+  hyphens: enable
+  indentation: enable
+  key-duplicates: enable
+  key-ordering: disable
+  line-length:
+    max: 200
+  new-line-at-end-of-file: enable
+  new-lines: enable
+  octal-values:
+    level: warning
+  quoted-strings: disable
+  trailing-spaces: enable
+  truthy:
+    level: warning
+...