Script to search for local docker images, retag them for a specific registry with a tag, then push these images to the registery.

Push-DockerImages.ps1

[CmdletBinding()]
param (
    [Parameter(Mandatory = $true, HelpMessage="value used to filter to the specific images for pushing")]
    [string]
    $imageFilter,
    [Parameter(Mandatory = $true, HelpMessage="full registry path the images will be pushed to")]
    [string]
    $targetRegistry,
    [Parameter(Mandatory = $false, HelpMessage="image tag value if not 'latest'")]
    [string]
    $targetTagValue='latest'
)

$imageFilter = $imageFilter.ToLowerInvariant();
$targetRegistry = $targetRegistry.ToLowerInvariant();
if(!$targetRegistry.EndsWith('/'))
{
    Write-Host "Target Registry does NOT end with a slash, will be added now." -ForegroundColor Red -BackgroundColor DarkGray
    $targetRegistry = "$targetRegistry/"
}

$imgList = docker images --format "{{.Repository}}:{{.Tag}}" | Where-Object{ $_.ToLower().Contains($imageFilter) } | Sort-Object $_
$imgList
$ans = Read-Host "Is this the correct list of images for re-tagging and pushing? (y/n)" 

if($ans -ieq 'y'){
    Write-Host "Retagging images" -ForegroundColor Green -BackgroundColor DarkGray

    $imgList = $imgList | ForEach-Object{$nn = "$targetRegistry$($($_.split('/') | Select-Object -Last 1).split(':') | Select-Object -First 1):$targetTagValue"; docker image tag $_  $nn; $nn;}
    $imgList
    $ans = Read-Host "Is this the retag list correct? (y/n)"
    if($ans -ieq 'y'){
        $imgList | ForEach-Object{docker push $_}
        Write-Host "Image Retaging and Pushing is completed."  -ForegroundColor DarkBlue -BackgroundColor DarkGray
    }
    else {
        Write-Host "Retag and Push process completed with only retagging occuring." -ForegroundColor DarkBlue -BackgroundColor DarkGray
    }
}
else {
    Write-Host "Retag and Push process completed with no actions taken." -ForegroundColor DarkBlue -BackgroundColor DarkGray
}