Docker uninstall instructions

virtualization/windowscontainers/manage-docker/configure-docker-daemon.md

@@ -21,7 +21,6 @@ Docker is required in order to work with Windows Containers. Docker consists of
 * [Windows Containers on Windows Server 2016](../quick-start/quick-start-windows-server.md)
 * [Windows Containers on Windows 10](../quick-start/quick-start-windows-10.md)
 
-
 ### Manual Installation
 If you would like to use an in-development version of the Docker Engine and client instead, you can use the steps that follow. This will install both the Docker Engine and client. If you are a developer testing new features or using a Windows Insider build, you may need to use an in-development version of Docker. Otherwise, follow the steps in the Install Docker section above to get the latest released versions.
 
@@ -186,3 +185,72 @@ Restart-Service docker
 
 For more information see, [Windows Configuration File on Docker.com](https://docs.docker.com/engine/reference/commandline/dockerd/#/windows-configuration-file).
 
+## Uninstall Docker
+*Use the steps in this section to uninstall Docker and perform a full cleanup of Docker system components from your Windows 10 or Windows Server 2016 system.*
+
+> Note: All commands in the steps below must be run from an **elevated** PowerShell session.
+
+### STEP 1: Prepare your system for Docker's removal 
+If you haven't already, it's good practice to make sure no containers are running on your system before removing Docker. Here are some useful commands for doing that:
+```
+# Leave swarm mode (this will automatically stop and remove services and overlay networks)
+docker swarm leave --force
+
+# Stop all running containers
+docker ps --quiet | ForEach-Object {docker stop $_}
+```
+It's also good practice to remove all containers, container images, networks and volumes from your system before removing Docker:
+```
+docker system prune --volumes --all
+```
+
+### STEP 2: Uninstall Docker 
+
+#### ***Steps to uninstall Docker on Windows 10:***
+- Go to **"Settings" > "Apps"** on your Windows 10 machine
+- Under **"Apps & Features"**, find **"Docker for Windows"**
+- Click **"Docker for Windows" > "Uninstall"**
+
+#### ***Steps to uninstall Docker on Windows Server 2016:***
+From an elevated PowerShell session, use the `Uninstall-Package` and `Uninstall-Module` cmdlets to remove the Docker module and its corresponding Package Management Provider from your system. 
+> Tip: You can find the Package Provider that you used to install Docker with `PS C:\> Get-PackageProvider -Name *Docker*`
+
+*For example*:
+```
+Uninstall-Package -Name docker -ProviderName DockerMsftProvider
+Uninstall-Module -Name DockerMsftProvider
+```
+
+### STEP 3: Cleanup Docker data and system components
+Remove Docker's *default networks,* so that their configuration won't stick around on your system once Docker is gone:
+```
+Get-HNSNetwork | Remove-HNSNetwork
+```
+Remove Docker's *program data* from your system:
+```
+Remove-Item "C:\ProgramData\Docker" -Recurse
+```
+You may also want to remove the *Windows optional features* associated with Docker/containers on Windows. 
+
+At a minimum, this includes the "Containers" feature, which is automatically enabled on any Windows 10 or Windows Server 2016 when Docker is installed. It may also include the "Hyper-V" feature, which is automatically enabled on Windows 10 when Docker is installed, but must be explicitly enabled on Windows Server 2016.
+
+> **IMPORTANT NOTE ON DISABLING HYPER-V:** [The Hyper-V feature](https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/about/) is a general virtualization feature that enables much more than just containers! Before disabling the Hyper-V feature, make sure there are no other virtualized components on your system that require it.
+
+#### ***Steps to remove Windows features on Windows 10:***
+- Go to **"Control Panel" > "Programs" > "Programs and Features" > "Turn Windows features on or off"** on your Windows 10 machine
+- Find the name of the feature/s you would like to disable--in this case, **"Containers"** and (optionally) **"Hyper-V"**
+- **Uncheck** the box next to the name of the feature you would like to disable
+- Click **"OK"**
+
+#### ***Steps to remove Windows features on Windows Server 2016:***
+From an elevated PowerShell session, use the following commands to disable the **"Containers"** and (optionally) **"Hyper-V"** features from your system:
+```
+Remove-WindowsFeature Containers
+Remove-WindowsFeature Hyper-V 
+```
+
+### STEP 4: Reboot your system
+To complete these uninstall/cleanup steps, from an elevated PowerShell session, run:
+```
+Restart-Computer -Force
+```