RancherOS: add aliyun usage doc

content/os/v1.x/en/installation/running-rancheros/_index.md

@@ -24,6 +24,12 @@ RancherOS runs on virtualization platforms, cloud providers and bare metal serve
 
 [Azure]({{< baseurl >}}/os/v1.x/en/installation/running-rancheros/cloud/azure)
 
+[OpenStack]({{< baseurl >}}/os/v1.x/en/installation/running-rancheros/cloud/openstack)
+
+[VMware ESXi]({{< baseurl >}}/os/v1.x/en/installation/running-rancheros/cloud/vmware-esxi)
+
+[Aliyun]({{< baseurl >}}/os/v1.x/en/installation/running-rancheros/cloud/aliyun)
+
 #### Bare Metal & Virtual Servers
 
 [PXE]({{< baseurl >}}/os/v1.x/en/installation/running-rancheros/server/pxe)

content/os/v1.x/en/installation/running-rancheros/cloud/aliyun/_index.md

@@ -0,0 +1,32 @@
+---
+title: Aliyun
+weight: 111
+---
+
+### Adding the RancherOS Image into Aliyun
+
+RancherOS is available as an image in Aliyun, and can be easily run in Elastic Compute Service (ECS).  Let’s walk through how to upload ECS image.
+
+1. Download the most recent RancherOS image. The image can be found in the [release artifacts](https://github.com/rancher/os/releases). It is a `rancheros-aliyun.vhd` file.
+2. Follow Aliyun's instructions on how to [upload the image](https://help.aliyun.com/document_detail/127285.html). The image must be uploaded into a OSS bucket before it can be added.
+3. Once the image is added to your ECS, we can start creating new instances!
+
+Here is a screenshot we can refer to:
+
+![RancherOS on Aliyun 1]({{< baseurl >}}/img/os/RancherOS_aliyun1.jpg)
+
+Please note these options:
+
+- Root disk size, it should be greater than 10GB and kept same as the value when booting an instance.
+- Platform, it must be `Others Linux`
+- Image Format, it must be `VHD`
+
+### Launching RancherOS using Aliyun Console
+
+After the image is uploaded, we can use the `Aliyun Console` to start a new instance. Currently RancherOS on Aliyun only supports ssh key access, so we need to fill it out in the console.
+
+Since the image is private, we need to use the `Custom Images`.
+
+![RancherOS on Aliyun 2]({{< baseurl >}}/img/os/RancherOS_aliyun2.jpg)
+
+After the instance is successfully started, we can login with the `rancher` user via SSH.