Hi,
I have found an issue after updating to the latest version of docker desktop.
I am running the following version of Docker Desktop :
Version: V2.0.0.2 (30215)
Channel: Stable
Build: 0b030e1
I am running this on my Windows 10 machine. Version Details are as follows:
Version: 1809 (OS Build 17763.253)
OS: Windows 10 Pro
When running New-NavContainer, the system checks to see if docker is running using the following code:
$dockerService = (Get-Service docker -ErrorAction Ignore)
if (!($dockerService)) {
throw "Docker Service not found / Docker is not installed"
}
It seems docker may have renamed the underlying service from "docker" to "com.docker.service".

@nickrobbo com.docker.service is used for the Docker Desktop tooling and doesn't run the Docker engine itself. If you switch to Windows Containers, the docker service should appear
@tfenster - thanks for this, rookie error! I re-installed docker through chocolately and forgot to switch to Windows Containers.
Most helpful comment
@nickrobbo
com.docker.serviceis used for the Docker Desktop tooling and doesn't run the Docker engine itself. If you switch to Windows Containers, thedockerservice should appear