Invoke-WithRetry.ps1

#!/usr/bin/env pwsh

# Executes a command and retries if it fails.
[cmdletbinding()]
param (
        [Parameter(Mandatory = $true)][string]$Cmd,
        [int]$Retries = 2,
        [int]$WaitFactor = 6
    )

Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

$count = 0
$completed = $false

Write-Output "Executing '$Cmd'"

while (-not $completed) {
    Invoke-Expression $Cmd
    $exit = $LASTEXITCODE
    $count++

    if ($exit -eq 0) {
        $completed = $true
    }
    else {
        if ($count -lt $Retries) {
            $wait = [Math]::Pow($WaitFactor, $count - 1)
            Write-Output "Retry $count/$Retries exited $exit, retrying in $wait seconds..."
            Start-Sleep $wait
        }
        else {
            Write-Output "Retry $count/$Retries exited $exit, no more retries left."
            throw "Failed to execute '$Cmd'"
        }
    }
}