Obtain docker image tags list

Get-DockerImageTag.ps1

function Get-DockerImageTag {
    [CmdletBinding()]
    param (
        [string]$ImageName,
        [switch]$OnlyActive
    )
    $FetchedRecords = New-Object System.Collections.ArrayList
    try {
        $fetchResult = (Invoke-WebRequest -Uri "https://registry.hub.docker.com/v2/repositories/library/$ImageName/tags/").Content | convertfrom-json
        if ($fetchResult.count -gt 0) { 
            $FetchedRecords+= $fetchResult.results | select name, tag_status, tag_last_pushed
            $url = $fetchResult.next
            if ($url) {
                do {
                    Write-Verbose "Processing next page $url"
                    $fetchResult = (Invoke-WebRequest -Uri $url).Content | convertfrom-json
                    $FetchedRecords+= $fetchResult.results | select name, tag_status, tag_last_pushed
                    $url = $fetchResult.next
                } until ($null -eq $url)
            }
        }
        else {
            Throw "There are no tags present for $ImageName"
        }
    }
    catch {
        "Could not fetch tags for $imageName docker image. :: $_"
    }

    return  ( $OnlyActive ) ? ($FetchedRecords | ?{$_.tag_status -eq 'active'}) : $FetchedRecords
}
<#

PS /home/greg> Get-DockerImageTag -ImageName 'registrfy'
Could not fetch tags for registrfy docker image. :: There are no tags present for registrfy       

Get-DockerImageTag -ImageName registry -OnlyActive

name   tag_status tag_last_pushed
----   ---------- ---------------
latest active     16/06/2021 17:06:39
2.7.1  active     16/06/2021 17:06:35
2.7    active     16/06/2021 17:06:34
2      active     16/06/2021 17:06:29
2.6.2  active     24/01/2020 01:38:43
2.6    active     24/01/2020 01:38:41

Get-DockerImageTag -ImageName registry

name       tag_status tag_last_pushed
----       ---------- ---------------
latest     active     16/06/2021 17:06:39
2.7.1      active     16/06/2021 17:06:35
2.7        active     16/06/2021 17:06:34
2          active     16/06/2021 17:06:29
2.6.2      active     24/01/2020 01:38:43
2.6        active     24/01/2020 01:38:41
2.5.2      inactive   10/05/2019 23:49:56
2.5        inactive   10/05/2019 23:49:53
2.7.0      inactive   04/01/2019 10:44:31
2.6.1      inactive   30/06/2017 01:05:26
2.6.1-rc.2 inactive   21/03/2017 22:49:12
2.6.0      inactive   21/03/2017 22:48:27
2.6.0-rc.2 inactive   27/12/2016 21:39:55
2.5.1      inactive   27/12/2016 21:39:19
2.6.0-rc.1 inactive   14/11/2016 17:36:50
2.5.0      inactive   02/08/2016 00:04:02
2.5.0-rc.2 inactive   06/07/2016 23:05:45
2.4.1      inactive   06/07/2016 23:05:26
2.4        inactive   06/07/2016 23:05:18
2.5.0-rc.1 inactive   23/06/2016 22:02:55
2.4.0      inactive   06/05/2016 22:24:56
2.3.1      inactive   04/04/2016 20:37:56
2.3        inactive   04/04/2016 20:37:49
2.3.0      inactive   03/03/2016 18:14:45
2.2.1      inactive   03/02/2016 00:11:03
2.2        inactive   03/02/2016 00:10:55
0.9.1      inactive   03/02/2016 00:10:36
0.8.1      inactive   03/02/2016 00:10:22
2.2.0      inactive   08/12/2015 07:16:15
0.6.1      inactive   14/11/2015 13:51:30
0.6.6      inactive   14/11/2015 13:49:58
0.6.8      inactive   14/11/2015 13:47:39
0.6.9      inactive   14/11/2015 13:45:06
0.7.1      inactive   14/11/2015 13:42:54
0.7.0      inactive   14/11/2015 13:42:31
0.8.0      inactive   14/11/2015 13:42:06
0.6.0      inactive   14/11/2015 13:40:03
0.9.0      inactive   14/11/2015 13:39:41
0.7.3      inactive   14/11/2015 13:37:49
0.6.2      inactive   14/11/2015 13:35:45
0.7.2      inactive   14/11/2015 13:35:27
0.5.9      inactive   14/11/2015 13:32:58
0.6.5      inactive   14/11/2015 13:30:50
0.6.3      inactive   14/11/2015 13:29:11
0.6.7      inactive   14/11/2015 13:28:37
0.6.4      inactive   14/11/2015 13:26:31
2.1.1      inactive   28/10/2015 10:09:45
2.1        inactive   28/10/2015 10:09:33
2.0        inactive
2.0.0      inactive
2.0.1      inactive
#>