Compare local Docker images with the ones in Azure Container Registry (ACR)

docker-acr.ps1

$registry = "%registry name here, i.e. myregistry%"
$repositories = docker images --digests | % { $_ -replace " +", "," } | convertfrom-csv | where { $_.REPOSITORY.StartsWith($registry) } | group REPOSITORY
Write-Output "Found $($repositories.Count) local repositories from $($registry) registry" 

foreach ($group in $repositories) {
    $repository = $group.Name.Split('/')[1]
    $remoteData = az acr repository show-tags -n $registry --repository $repository --detail | convertfrom-json

    foreach ($localRepo in $group.Group) {
        $localRepo | Add-Member -NotePropertyName REPO -NotePropertyValue $repository
        $found = $false;

        foreach ($remoteRepo in $remoteData ) {
            if ($localRepo.TAG -eq $remoteRepo.Name) {
                if ($localRepo.DIGEST -eq $remoteRepo.digest) {
                    $localRepo | Add-Member -NotePropertyName STATUS -NotePropertyValue "Up to date"
                }
                else {
                    $localRepo | Add-Member -NotePropertyName STATUS -NotePropertyValue "Outdated"
                }

                $found = $true;
            }
        }

        if(!$found){
            $localRepo | Add-Member -NotePropertyName STATUS -NotePropertyValue "Not found"
        }
    }

    Write-Output $group.Group | select REPO, TAG,@{
        Label = "STATUS"
        Expression =
        {
            switch ($_.Status)
            {
                'Not found' { $color = "93"; break }
                'Up to date' { $color = "32"; break }
                'Outdated' { $color = "31"; break }
               default { $color = "0" }
            }
            $e = [char]27
           "$e[${color}m$($_.Status)${e}[0m"
        }
     }
}

Example: