From 99705b39202e833e4c723203c17d4b908f8b5d72 Mon Sep 17 00:00:00 2001
From: Alexander Bauer <sasha@linux.com>
Date: Fri, 16 Dec 2022 02:29:32 +0000
Subject: [PATCH] Add initContainers option

Signed-off-by: Alexander Bauer <sasha@linux.com>
---
 charts/coredns/templates/deployment.yaml | 4 ++++
 charts/coredns/values.yaml               | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/charts/coredns/templates/deployment.yaml b/charts/coredns/templates/deployment.yaml
index 7412e19..a0a9489 100644
--- a/charts/coredns/templates/deployment.yaml
+++ b/charts/coredns/templates/deployment.yaml
@@ -89,6 +89,10 @@ spec:
       {{- if .Values.nodeSelector }}
       nodeSelector:
 {{ toYaml .Values.nodeSelector | indent 8 }}
+      {{- end }}
+      {{- if .Values.initContainers }}
+      initContainers:
+{{- toYaml .Values.initContainers | nindent 8}}
       {{- end }}
       containers:
       - name: "coredns"
diff --git a/charts/coredns/values.yaml b/charts/coredns/values.yaml
index e7d21c2..ec8d8f1 100644
--- a/charts/coredns/values.yaml
+++ b/charts/coredns/values.yaml
@@ -42,6 +42,12 @@ rollingUpdate:
   maxUnavailable: 1
   maxSurge: 25%
 
+## Optionally, add init containers to run before the main CoreDNS container starts up.
+# initContainers:
+#   - name: helloworld
+#     image: "busybox"
+#     command: ["bash", "-c", "Hello world"]
+
 # Under heavy load it takes more that standard time to remove Pod endpoint from a cluster.
 # This will delay termination of our pod by `preStopSleep`. To make sure kube-proxy has
 # enough time to catch up.