Get-ContainerImageCurrentness.ps1
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<# .Synopsis Get currentness of a local container image .Description Gets the installed version of a local image .Parameter ImageName The image name .Parameter ImageTag The image version .Parameter Image The complete image with image name and version .Parameter Registry If you don't want to use the mcr.microsoft.com registry specify with this parameter .Example Get-ContainerImageCurrentness -Image "businesscentral/sandbox:ltsc2019" .Example Get-ContainerImageCurrentness -Image "businesscentral/sandbox:ltsc2019" -Registry "mcr.microsoft.com" .Example Get-ContainerImageCurrentness -ImageName "businesscentral/sandbox" -ImageTag "ltsc2019" .Example Get-ContainerImageCurrentness -ImageName "businesscentral/sandbox" -ImageTag "ltsc2019" -Registry "mcr.microsoft.com" #> function Get-ContainerImageCurrentness { Param( [Parameter(ValueFromPipelineByPropertyName = $True)] $ImageName, [Parameter(ValueFromPipelineByPropertyName = $True)] $ImageTag, [Parameter(ValueFromPipelineByPropertyName = $True)] $Image, [Parameter(ValueFromPipelineByPropertyName = $True)] $Registry = "mcr.microsoft.com" ) $localImageIsLatest = $True; if (($Image -eq "") -or ($Image -eq $null)) { if ((($ImageName -eq "") -or ($ImageName -eq $null)) -and (($ImageTag -eq "") -or ($ImageTag -eq $null))) { Write-Error "You need to either specify the Image or the ImageName and the ImageTag" } $Image = $Registry + "/" + $ImageName + ":" + $ImageTag } else { # https://regexr.com/4l9vu $pattern = [regex]'([--:\w?@%&+~#=]*\.[a-z]{2,4}\/{0,2})((?:[?&](?:\w+)=(?:\w+))+|[--:\w?@%&+~#=]+)?'; $matches = $Image | Select-String -Pattern $pattern -AllMatches $result = $matches.Matches.Groups[2].Value.Split(':'); $ImageName = $result[0]; $ImageTag = $result[1]; $Image = $Registry + "/" + $ImageName + ":" + $ImageTag } try { $manifestUri = "https://$Registry/v2/$ImageName/manifests/$ImageTag" $manifestWebRequest = Invoke-WebRequest -Uri $manifestUri -Method Get $manifestContent = [System.Text.Encoding]::ASCII.GetString($manifestWebRequest.RawContentStream.ToArray()); $manifestJsonObj = $manifestContent | ConvertFrom-Json $manifestHistory = $manifestJsonObj.history $localImageInspectJson = docker inspect $Image $localImageInspectObj = $localImageInspectJson | ConvertFrom-Json $localImageCreated = $localImageInspectObj.Created for ($i = 1; $i -lt $manifestHistory.length; $i++) { $manifestCompatibility = $manifestHistory[$i].v1Compatibility | ConvertFrom-Json $manifestCompatibilityCreated = [DateTime]$manifestCompatibility.created $ts = New-TimeSpan -Start $localImageCreated -End $manifestCompatibilityCreated if ($ts.Hours -ge 1) { $localImageIsLatest = $false Write-Output $manifestCompatibilityCreated } } } catch { $localImageIsLatest = $false Write-Warning "The image $Image could not be found locally" } finally { if ($localImageIsLatest) { Write-Host "The local version of the image $image is the latest version" } else { Write-Host "The local version of the image $image is NOT the latest version" } } return $localImageIsLatest } |