From a679dee6ae3b760a8d81838de23c033be4510460 Mon Sep 17 00:00:00 2001
From: samiwelthomasHO <113512609+samiwelthomasHO@users.noreply.github.com>
Date: Mon, 10 Oct 2022 09:26:33 +0100
Subject: [PATCH] Add hadolint into git pre-commit hooks (#273)

* Add docker lint pre-commit using hadolint

* Only lint dockerfiles that change in the commit.
---
 .githooks/pre-commit | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/.githooks/pre-commit b/.githooks/pre-commit
index 957e52be..8ae90446 100755
--- a/.githooks/pre-commit
+++ b/.githooks/pre-commit
@@ -3,6 +3,7 @@
 set -e
 
 JSONNET_FILES_CHANGED=$(git --no-pager diff --cached --name-only --diff-filter=ACM | grep "sonnet" | wc -l)
+DOCKERFILE_CHANGED=$(git --no-pager diff --cached --name-only --diff-filter=ACM | grep "Dockerfile" | wc -l)
 
 REPO_ROOT_DIR=$(git rev-parse --show-toplevel)
 
@@ -10,4 +11,13 @@ if [ "$JSONNET_FILES_CHANGED" -gt "0" ]; then
     $REPO_ROOT_DIR/monitoring-as-code/fmt.sh
     $REPO_ROOT_DIR/monitoring-as-code/lint.sh
     git add $REPO_ROOT_DIR
+fi
+
+if [ "$DOCKERFILE_CHANGED" -gt "0" ]; then
+    dockerfiles_changed=$(git --no-pager diff --cached --name-only --diff-filter=ACM | grep "Dockerfile")
+    for dockerfile in $dockerfiles_changed
+    do
+        echo $dockerfile
+        docker run --rm -i ghcr.io/hadolint/hadolint < $dockerfile
+    done
 fi
\ No newline at end of file