Powershell script to open a project and an explorer window in the project root from powershell - cmd completion included

Idea pulled from the tutorial by Jim Christopher: Pluralsight - Everyday PowerShell Completed entirely using Martin Schvartzman's code: # dynamic-validateset-in-a-dynamic-parameter

function push-project() {
    [CmdletBinding()]
    Param(
        # Any other parameters can go here
    )
 
    DynamicParam {
            # Set the dynamic parameters' name
            $ProjectFolderPath = '[add projects folder here]'
            $ParameterName = 'project'
                        
            # Create the dictionary 
            $RuntimeParameterDictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary

            # Create the collection of attributes
            $AttributeCollection = New-Object System.Collections.ObjectModel.Collection[System.Attribute]
            
            # Create and set the parameters' attributes
            $ParameterAttribute = New-Object System.Management.Automation.ParameterAttribute
            $ParameterAttribute.Mandatory = $true
            $ParameterAttribute.Position = 1

            # Add the attributes to the attributes collection
            $AttributeCollection.Add($ParameterAttribute)

            # Generate and set the ValidateSet 
            $arrSet = Get-ChildItem -Path C:\Users\Ollie.Vaughan\Projects -Directory | Select-Object -ExpandProperty Name
            $ValidateSetAttribute = New-Object System.Management.Automation.ValidateSetAttribute($arrSet)

            # Add the ValidateSet to the attributes collection
            $AttributeCollection.Add($ValidateSetAttribute)

            # Create and return the dynamic parameter
            $RuntimeParameter = New-Object System.Management.Automation.RuntimeDefinedParameter($ParameterName, [string], $AttributeCollection)
            $RuntimeParameterDictionary.Add($ParameterName, $RuntimeParameter)
            return $RuntimeParameterDictionary
    }

    begin {
        # Bind the parameter to a friendly variable
        $project = $PsBoundParameters[$ParameterName]
    }

    process {
  $ProjectFolderPath +=  $project
        push-location $ProjectFolderPath;
  Invoke-Item .;
  Invoke-Item *.sln;
    }
}

new-alias -name pp -value push-project

Remove EVERY Exited container in Windows 2016 tech preview docker containers list using PowerShell.

I'm recording this for my own records. Use with discretion and at your own risk.

foreach($a in (docker ps -a | select-string -pattern "Exited"))
{
    docker rm $a.toString().subString(0,12)
}