$ErrorActionPreference = "Continue"
Write-Output "=== docker/winget ==="
Get-Command docker, winget, choco -ErrorAction SilentlyContinue | Select-Object Name
docker version 2>&1 | Select-Object -First 5
Write-Output "=== local listen 3306/5432 ==="
foreach ($p in 3306,5432,13306,15432) {
  $c = Get-NetTCPConnection -LocalPort $p -State Listen -EA SilentlyContinue | Select-Object -First 1
  if ($c) { "$p local-LISTEN" } else { "$p local-free" }
}
Write-Output "=== E free ==="
Get-PSDrive E | Format-Table @{n='FreeGB';e={[math]::Round($_.Free/1GB,1)}}
Write-Output "DONE"