Functions/Public/Get-DockerImageBlob.ps1
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function Get-DockerImageBlob { [CmdletBinding(DefaultParameterSetName='Unauthenticated')] param( [ValidateNotNullOrEmpty()] [string] $Registry = 'https://registry.hub.docker.com', [Parameter(ParameterSetName='BearerToken', Mandatory)] [ValidateNotNullOrEmpty()] [string] $Token, [Parameter(ParameterSetName='HeaderApiKey', Mandatory)] [ValidateNotNullOrEmpty()] [string] $HeaderKey, [Parameter(ParameterSetName='HeaderApiKey', Mandatory)] [ValidateNotNullOrEmpty()] [string] $HeaderValue, [Parameter(ParameterSetName='BasicAuthentication', Mandatory)] [ValidateNotNullOrEmpty()] [pscredential] $Credential, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string] $Repository, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string] $Digest ) $Params = @{ UseBasicParsing = $true Method = 'Get' Uri = "$Registry/v2/$Repository/blobs/$Digest" Headers = @{} } if ($PSCmdlet.ParameterSetName -ieq 'BearerToken') { $Params.Headers.Add('Authorization', "Bearer $Token") } elseif ($PSCmdlet.ParameterSetName -ieq 'HeaderApiKey') { $Params.Headers.Add($HeaderKey, $HeaderValue) } elseif ($PSCmdlet.ParameterSetName -ieq 'BasicAuthentication') { $Token = Get-PlaintextFromSecureString -SecureString $Credential.Password $Authentication = "$($Credential.UserName):$Token" | ConvertTo-Base64 $Params.Headers.Add('Authorization', "Basic $Authentication") } $Response = Invoke-WebRequest @Params ConvertFrom-ByteArray -Data $Response.Content -Encoding ASCII } |