setup pre-commit for validating schemas

Author: jakub-tldr

.gitignore

@@ -8,3 +8,4 @@ terraform/**/.*
 terraform/**/*.tfvars
 .direnv/
 .envrc
+.venv/

.pre-commit-config.yaml

@@ -0,0 +1,20 @@
+---
+repos:
+  - repo: https://github.com/dadav/helm-schema
+    rev: 0.18.1
+    hooks:
+      - id: helm-schema
+        # for all available options: helm-schema -h
+        args:
+          # directory to search recursively within for charts
+          - --chart-search-root=charts
+
+          # don't analyze dependencies
+          - --no-dependencies
+
+          # add references to values file if not exist
+          - --add-schema-reference
+
+          # list of fields to skip from being created by default
+          # e.g. generate a relatively permissive schema
+          # - "--skip-auto-generation=required,additionalProperties"