update readme

Signed-off-by: tianya <[email protected]>

Author: tianyax

README.md

@@ -11,14 +11,46 @@ The Dapr CLI allows you to setup Dapr on your local dev machine or on a Kubernet
 
 ### Prerequisites
 
-On default, during initialization the Dapr CLI will install the Dapr binaries as well as setup a developer environment to help you get started easily with Dapr. This environment uses Docker containers, therefore Docker needs to be installed. If you prefer to run Dapr without this environment and no dependency on Docker, after installation of the CLI make sure to follow the instructions to initialize Dapr using [slim init](#slim-init).
+On default, during initialization the Dapr CLI will install the Dapr binaries as well as setup a developer environment to help you get started easily with Dapr. This environment uses `Docker`, `Podman` or `Containerd` containers, therefore container runtime needs to be installed. If you prefer to run Dapr without this environment and without any container dependencies, after installation of the CLI make sure to follow the instructions to initialize Dapr using [slim init](#slim-init).
 
 Note, if you are a new user, it is strongly recommended to install Docker and use the regular init command.
 
 * Install [Docker](https://docs.docker.com/install/)
 
 >__Note: On Windows, Docker must be running in Linux Containers mode__
 
+If you want to use podman as a runtime, then please refer to the installation.
+
+* Install [Podman](https://podman-desktop.io/docs/Installation)
+
+If you want to use containerd as a runtime, then please refer to the installation.
+
+For both Windows and Linux systems:
+
+    ### Step 1: Install [Containerd](https://github.com/containerd/containerd/blob/main/docs/getting-started.md).
+
+    ### Step 2: Install [nerdctl](https://github.com/containerd/nerdctl/blob/main/docs/installation.md).
+
+MacOS:
+    containerd and nerdctl are not supported for macOS. You can use tools like `lima`, `colima` or `rancher-desktop`. The section below shows how to install on macOS using brew.
+    [Lima](https://github.com/lima-vm/lima):
+
+    ```bash
+    brew install lima
+    limactl start
+    ln -s nerdctl.lima /usr/local/bin/nerdctl
+
+    ```
+
+    [Colima](https://github.com/abiosoft/colima)
+
+    ```bash
+    brew install colima
+    colima start --runtime containerd
+    colima nerdctl install
+    ```
+    [Rancher-desktop](https://docs.rancherdesktop.io/getting-started/installation#installing-rancher-desktop-on-macos)
+
 ### Installing Dapr CLI
 
 #### Using script to install the latest release