Create uninstall-docker-ce.ps1

[brasmith-ms]

Uninstall script for docker ce

[ntrappe-msft]

I've got a few suggestions on how we could improve the script to be a bit more error-friendly. Please let me know if these are unnecessary since PowerShell scripting is still new to me.

1. I agree that we should have a confirmation of whether a user wants to proceed because they may have containers running. I think we could go a step farther and tell them if they do have containers running (or images). We could do something like:

# Docker was installed so check if the service is running
if ((Get-Service -Name $global:DockerServiceName).Status -eq "Running")
{
    # Check that no containers are running or warn user
    if ($global:GetContainers -match "Up")
    {
        Write-Output "There are running containers."
        $response = Read-Host "Do you want to proceed? (Type 'yes' to continue or 'no' to exit)"

        # Stop uninstall if they do not want to proceed
        if ($response -ieq "no" -or $response -ieq "n")
        {
            Write-Output "Aborting uninstall."
            return
        }

        # Continue with uninstall by stopping the service
        Stop-Service -Name $global:DockerServiceName
    }
}

2. I tend to check if a service is installed or running before trying an uninstall. (Mainly because someone could have attempted part of the uninstall but abandoned it partway through).

# Check if Docker was installed before proceeding
if ((Get-Service -Name $global:DockerServiceName -ErrorAction SilentlyContinue) -eq $null)
{
    Write-Output "Docker was not installed. Aborting."
    return
}

# Docker service is not running so unregister dockerd next
if ((Get-Service -Name $global:DockerdServiceName -ErrorAction SilentlyContinue) -ne $null)
{
    # Remove dockerd
    & dockerd --unregister-service
}

3. And I like doing a check at the very end of our expected behavior to confirm from our side that it worked.

# Check that we successfully removed docker
if ((Get-Service -Name $global:DockerServiceName -ErrorAction SilentlyContinue) -eq $null)
{
    Write-Output "Docker-CE was uninstalled."
}
else
{
    Write-Output "An error occured and failed to uninstall Docker-CE."
}

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[microsoft-github-policy-service]

This issue has been open for 30 days with no updates.
no assignees, please provide an update or close this issue.

[microsoft-github-policy-service]

This issue has been open for 30 days with no updates.
no assignees, please provide an update or close this issue.

[microsoft-github-policy-service]

This issue has been open for 30 days with no updates.
no assignees, please provide an update or close this issue.