Question 259103 in Docker Question posted in
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Docker – How to get latest binary version from Archive using Powershell

I need a PowerShell script to get latest binary version from this archive list https://download.docker.com/win/static/stable/x86_64/

So as when I run the script, it checks for latest zip and returns me latest version number and link to download. For example, if latest file is docker-24.0.6.zip then I need

  • 24.0.6
  • link to that zip which ultimately I can use to download

I have subsequent script to utilize that zip but I have never tried getting it from an archive url.

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2

Answers


  1. 0

    docker-check.ps1:

    $archiveUrl = "https://download.docker.com/win/static/stable/x86_64/"

$response = Invoke-WebRequest -Uri $archiveUrl

$pattern = '<a href="([^"]*docker-([d.]+).zip)"'
$matches = [regex]::Matches($response.Content, $pattern)

$latestVersion = $null
$latestDownloadLink = $null

foreach ($match in $matches) {
    $downloadLink = $match.Groups[1].Value
    $version = $match.Groups[2].Value

    if ($latestVersion -eq $null -or [Version]$version -gt [Version]$latestVersion) {
        $latestVersion = $version
        $latestDownloadLink = $downloadLink
    }
}

if ($latestVersion -ne $null -and $latestDownloadLink -ne $null) {
    Write-Host "Latest Version: $latestVersion"
    Write-Host "Download Link: $archiveUrl$latestDownloadLink"
} else {
    Write-Host "Unable to find the latest version and download link."
}

    Output:

    enter image description here

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  2. 0

    To offer a simpler alternative to Ömer Sezer’s helpful solution, based on the observation that the version list at https://download.docker.com/win/static/stable/x86_64/ is simply being appended to, implying that the most recent recent version is listed last:

    $rootUrl = 'https://download.docker.com/win/static/stable/x86_64/'

# Get the name of the ZIP file containing the latest version, 
# assumed to be the last one ([-1]) listed.
$latestVersionZipFile = 
  [regex]::Matches(
    (Invoke-RestMethod -UseBasicParsing $rootUrl), 
    'bdocker-(.+?).zip'
  ).Value[-1]

# Construct the full download URL
$latestVersionZipFileUrl = $rootUrl + $latestVersionZip

    Note: -UseBasicParsing, which prevents parsing of the response by the obsolete Internet Explorer engine, is only required in Windows PowerShell – you can omit the parameter in PowerShell (Core) 7+.

    You can then download the latest version as follows:

    Invoke-RestMethod -UseBasicParsing $latestVersionZipFileUrl -OutFile $latestVersionZipFile

    If you don’t want to rely on the last ZIP file listed being the most recent one, replace the $latestZipFile = ... statement with the following, which sorts the extracted filenames by their embedded version number and picks the highest one.

    $latestVersionZipFile = 
  [regex]::Matches(
    (Invoke-RestMethod -UseBasicParsing $rootUrl), 
    'bdocker-(.+?).zip'
  ).Value |
  Sort-Object { [version] ($_ -replace '^docker-|(-ce)?.zip') } |
  Select-Object -Last 1
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