feature/helmchart: supported private helm chart repo to install dapr cluster

Signed-off-by: 1046102779 <seachen@tencent.com>

daprdocs/content/en/operations/hosting/kubernetes/kubernetes-deploy.md

@@ -37,7 +37,7 @@ Both the Dapr CLI and the Dapr Helm chart automatically deploy with affinity for
 
 You can install Dapr to a Kubernetes cluster using the [Dapr CLI]({{< ref install-dapr-cli.md >}}).
 
-### Install Dapr
+### Install Dapr (a official Dapr Helm chart)
 
 The `-k` flag initializes Dapr on the Kubernetes cluster in your current context.
 
@@ -58,6 +58,14 @@ dapr init -k
 ✅  Success! Dapr has been installed to namespace dapr-system. To verify, run "dapr status -k" in your terminal. To get started, go here: https://aka.ms/dapr-getting-started
 ```
 
+### Install Dapr (a private Dapr Helm chart)
+
+export HELM_CHART_REPO_URL="https://helm.custom-domain.com/dapr/dapr"
+export HELM_CHART_REPO_USERNAME="username_xxx"
+export HELM_CHART_REPO_PASSWORD="passwd_xxx"
+
+Setting the above parameters will allow `dapr init -k` to install Dapr images from the configured Helm repository.
+
 ### Install in custom namespace
 
 The default namespace when initializing Dapr is `dapr-system`. You can override this with the `-n` flag.
@@ -114,7 +122,11 @@ The latest Dapr helm chart no longer supports Helm v2. Please migrate from Helm
 2. Add Helm repo and update
 
     ```bash
+    // Add a official Dapr Helm chart.
     helm repo add dapr https://dapr.github.io/helm-charts/
+    // Or also add a private Dapr Helm chart.
+    helm repo add dapr http://helm.custom-domain.com/dapr/dapr/ \
+       --username=xxx --password=xxx
     helm repo update
     # See which chart versions are available
     helm search repo dapr --devel --versions

daprdocs/content/en/operations/hosting/kubernetes/kubernetes-production.md

@@ -87,8 +87,11 @@ For a full list of all available options you can set in the values file (or by u
 Instead of using either `helm install` or `helm upgrade` as shown below, you can also run `helm upgrade --install` - this will dynamically determine whether to install or upgrade.
 
 ```bash
-# add/update the helm repo
+# Add/update a official Dapr Helm repo.
 helm repo add dapr https://dapr.github.io/helm-charts/
+# or add/update a private Dapr Helm repo.
+helm repo add dapr http://helm.custom-domain.com/dapr/dapr/ \
+   --username=xxx --password=xxx
 helm repo update
 
 # See which chart versions are available

daprdocs/content/en/reference/cli/dapr-init.md

@@ -38,10 +38,10 @@ dapr init [flags]
 | `--slim`, `-s`        |                      | `false`       | Exclude placement service, Redis and Zipkin containers from self-hosted installation |
 | `--timeout`           |                      | `300`         | The wait timeout for the Kubernetes installation                                     |
 | `--wait`              |                      | `false`       | Wait for Kubernetes initialization to complete                                       |
-|        N/A            |DAPR_DEFAULT_IMAGE_REGISTRY|          | Specifies a private dapr helm chart url, defaultly Official Helm Chart: `https://dapr.github.io/helm-charts`|
+|        N/A            |DAPR_DEFAULT_IMAGE_REGISTRY|          | It is used to specify the default container registry to pull images from. When its value is set to `GHCR` or `ghcr` it pulls the required images from Github container registry. To default to Docker hub, unset the environment variable or leave it blank|
-|        N/A            |HELM_CHART_REPO_URL|          | Specifies a private dapr helm chart url|
+|        N/A            |HELM_CHART_REPO_URL|          | Specifies a private Dapr Helm chart url|
-|        N/A            | HELM_CHART_REPO_USERNAME | A username for a private helm chart | The username required to access a private dapr helm chart. If it can be accessed publicly, the env variable does not need to be set| 
+|        N/A            | HELM_CHART_REPO_USERNAME | A username for a private Helm chart | The username required to access the private Dapr Helm chart. If it can be accessed publicly, this env variable does not need to be set|
-|        N/A            | HELM_CHART_REPO_PASSWORD | A password for a private helm chart  |The password required to access a private dapr helm chart. If it can be accessed publicly, the env variable does not need to be set| |
+|        N/A            | HELM_CHART_REPO_PASSWORD | A password for a private Helm chart  |The password required to access the private Dapr Helm chart. If it can be accessed publicly, this env variable does not need to be set| |
 
 ### Examples
 

daprdocs/content/en/reference/environment/_index.md

@@ -21,6 +21,6 @@ The following table lists the environment variables used by the Dapr runtime, CL
 | NAMESPACE | Dapr sidecar | Used to specify a component's [namespace in self-hosted mode]({{< ref component-scopes >}}). |
 | DAPR_DEFAULT_IMAGE_REGISTRY | Dapr CLI | In self-hosted mode, it is used to specify the default container registry to pull images from. When its value is set to `GHCR` or `ghcr`, it pulls the required images from Github container registry. To default to Docker hub, unset this environment variable. |
 | SSL_CERT_DIR | Dapr sidecar | Specifies the location where the public certificates for all the trusted certificate authorities (CA) are located. Not applicable when the sidecar is running as a process in self-hosted mode.|
-| HELM_CHART_REPO_URL | Your private dapr helm chart url  | Specifies a private dapr helm chart url, defaultly Official Helm Chart: `https://dapr.github.io/helm-charts`|
+| HELM_CHART_REPO_URL | Your private Dapr Helm chart url  | Specifies a private Dapr Helm chart url, which defaults to the official Helm chart URL: `https://dapr.github.io/helm-charts`|
-| HELM_CHART_REPO_USERNAME | A username for a private helm chart | The username required to access a private dapr helm chart. If it can be accessed publicly, the env variable does not need to be set| 
+| HELM_CHART_REPO_USERNAME | A username for a private Helm chart | The username required to access the private Dapr Helm chart. If it can be accessed publicly, this env variable does not need to be set|
-| HELM_CHART_REPO_PASSWORD | A password for a private helm chart  |The password required to access a private dapr helm chart. If it can be accessed publicly, the env variable does not need to be set| |
+| HELM_CHART_REPO_PASSWORD | A password for a private Helm chart  |The password required to access the private Dapr helm chart. If it can be accessed publicly, this env variable does not need to be set|