doc(datadog): docuement datadog.envDict usage (#1605)

Author: clamoriniere

charts/datadog/CHANGELOG.md

@@ -1,5 +1,9 @@
 # Datadog changelog
 
+## 3.79.1
+
+* Document how to use `datadog.envDict` option with the `--set` helm's flag.
+
 ## 3.79.0
 
 * Add Logs Collection support for Google GKE on GDC

charts/datadog/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: datadog
-version: 3.79.0
+version: 3.79.1
 appVersion: "7"
 description: Datadog Agent
 keywords:

charts/datadog/README.md

@@ -1,6 +1,6 @@
 # Datadog
 
-![Version: 3.79.0](https://img.shields.io/badge/Version-3.79.0-informational?style=flat-square) ![AppVersion: 7](https://img.shields.io/badge/AppVersion-7-informational?style=flat-square)
+![Version: 3.79.1](https://img.shields.io/badge/Version-3.79.1-informational?style=flat-square) ![AppVersion: 7](https://img.shields.io/badge/AppVersion-7-informational?style=flat-square)
 
 [Datadog](https://www.datadoghq.com/) is a hosted infrastructure monitoring platform. This chart adds the Datadog Agent to all nodes in your cluster via a DaemonSet. It also optionally depends on the [kube-state-metrics chart](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-state-metrics). For more information about monitoring Kubernetes with Datadog, please refer to the [Datadog documentation website](https://docs.datadoghq.com/agent/basic_agent_usage/kubernetes/).
 
@@ -441,6 +441,16 @@ agents:
 # (...)
 ```
 
+## Set an environment variable with the `--set` helm flag
+
+You can set environment variables using the `--set` helm's flag  thanks to the `datadog.envDict` field.
+
+For example, to set the `DD_ENV` environment variable:
+
+```console
+$ helm install --set datadog.envDict.DD_ENV=prod <release name> datadog/datadog
+```
+
 ## All configuration options
 
 The following table lists the configurable parameters of the Datadog chart and their default values. Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,

charts/datadog/README.md.gotmpl

@@ -437,6 +437,16 @@ agents:
 # (...)
 ```
 
+## Set an environment variable with the `--set` helm flag
+
+You can set environment variables using the `--set` helm's flag  thanks to the `datadog.envDict` field.
+
+For example, to set the `DD_ENV` environment variable:
+
+```console
+$ helm install --set datadog.envDict.DD_ENV=prod <release name> datadog/datadog
+```
+
 ## All configuration options
 
 The following table lists the configurable parameters of the Datadog chart and their default values. Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,