From 7a404d5e7cb97eb4fe5f60e5e562df560537caab Mon Sep 17 00:00:00 2001
From: Stefan Prodan <stefan.prodan@gmail.com>
Date: Wed, 27 Jan 2021 13:21:49 +0200
Subject: [PATCH] Add Drone envsubst install to docs

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>
---
 docs/spec/v1beta1/kustomization.md | 10 ++++++----
 go.mod                             |  1 +
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/docs/spec/v1beta1/kustomization.md b/docs/spec/v1beta1/kustomization.md
index 3f394ceb2..46e6be651 100644
--- a/docs/spec/v1beta1/kustomization.md
+++ b/docs/spec/v1beta1/kustomization.md
@@ -20,7 +20,7 @@ type KustomizationSpec struct {
 	// Decrypt Kubernetes secrets before applying them on the cluster.
 	// +optional
 	Decryption *Decryption `json:"decryption,omitempty"`
-	
+
 	// The interval at which to reconcile the Kustomization.
 	// +required
 	Interval metav1.Duration `json:"interval"`
@@ -30,7 +30,7 @@ type KustomizationSpec struct {
 	// value to retry failures.
 	// +optional
 	RetryInterval *metav1.Duration `json:"retryInterval,omitempty"`
-	
+
 	// The KubeConfig for reconciling the Kustomization on a remote cluster.
 	// When specified, KubeConfig takes precedence over ServiceAccountName.
 	// +optional
@@ -54,7 +54,7 @@ type KustomizationSpec struct {
 	// A list of resources to be included in the health assessment.
 	// +optional
 	HealthChecks []meta.NamespacedObjectKindReference `json:"healthChecks,omitempty"`
-	
+
     // A list of images used to override or set the name and tag for container images.
     // +optional
     Images []Image `json:"images,omitempty"`
@@ -631,8 +631,10 @@ You can replicate the controller post-build substitutions locally using
 and Drone's [envsubst](https://github.com/drone/envsubst):
 
 ```console
+$ $ go install github.com/drone/envsubst/cmd/envsubst
+
 $ export region=eu-central-1
-$ kustomize build ./apps/ | envsubst 
+$ kustomize build ./apps/ | $GOPATH/bin/envsubst 
 ---
 apiVersion: v1
 kind: Namespace
diff --git a/go.mod b/go.mod
index edd7ee200..ad49dc85c 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ replace github.com/fluxcd/kustomize-controller/api => ./api
 
 require (
 	github.com/cyphar/filepath-securejoin v0.2.2
+	github.com/drone/envsubst v1.0.3-0.20200804185402-58bc65f69603
 	github.com/fluxcd/kustomize-controller/api v0.7.2
 	github.com/fluxcd/pkg/apis/meta v0.7.0
 	github.com/fluxcd/pkg/runtime v0.8.0