From 9105aceafdd63bfd3aeae33129cb3aec7948ce44 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Socho=C5=84?= <kaszpir@gmail.com>
Date: Mon, 18 Jan 2021 20:45:42 +0100
Subject: [PATCH] Add GitLab pipeline snippet for containered exec

Use official docker image instead of fetching binary files from GH.
Setting empty entrypoint is needed to mitigate issues such as
* ERR - unknown shorthand flag: 'c' in -c'
---
 docs/contrib.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/docs/contrib.md b/docs/contrib.md
index 16ab255..1a94e30 100644
--- a/docs/contrib.md
+++ b/docs/contrib.md
@@ -28,3 +28,20 @@ else
     exit 1
 fi
 ```
+
+## GitLab in container
+
+Below code fragment is basic example useful to verify files under `k8s/` subdirectory.
+Adjust `stage` and subdirectory (`k8s/`) in `find` command accordingly to your project spec.
+
+```yaml
+kubeval:
+  stage: lint
+  image:
+    name: garethr/kubeval
+    # force empty entrypoint, otherwise you will get
+    # err - unknown shorthand flag: 'c' in -c
+    entrypoint: [""]
+  script:
+    - find k8s/ -type f -name "*.yaml" -exec kubeval {} \; ;
+```