List all ACR tasks across all subscriptions

GetACRTasks.ps1

Function Get-ARMAPIToken {
    <#
    .DESCRIPTION
    Requests a token from STS with the MS Graph specified as the resource/intended audience
    #>
    [cmdletbinding()]
    param(
        [Parameter(Mandatory = $True)]
        [string]
        $ClientID,

        [Parameter(Mandatory = $True)]
        [string]
        $ClientSecret,

        [Parameter(Mandatory = $True)]
        [string]
        $TenantName
    )

    $Body = @{
        Grant_Type      =   "client_credentials"
        Scope           =   "https://management.azure.com/.default"
        client_Id       =   $ClientID
        Client_Secret   =   $ClientSecret
    }

    $Token = Invoke-RestMethod `
        -URI    "https://login.microsoftonline.com/$TenantName/oauth2/v2.0/token" `
        -Method POST `
        -Body   $Body

    $Token
}

# Get a token for AzureRM API token:
$Token = Get-ARMAPIToken `
    -ClientID       "<your client ID>" `
    -ClientSecret   "<your client secret>" `
    -TenantName     "<your Azure tenant name>"

# Get list of subscriptions we can read:
$Subscriptions = $null
$URI = 'https://management.azure.com/subscriptions?api-version=2020-01-01'
$Subscriptions = Invoke-RestMethod `
    -Headers @{Authorization = "Bearer $($Token.access_token)"} `
    -URI $URI `
    -UseBasicParsing `
    -Method "GET" `
    -ContentType "application/json"


# Get list of ACRs under each subscription:
$ACRs = $null
ForEach ($Sub In $Subscriptions.value) {
    $URI = "https://management.azure.com/subscriptions/$($Sub.subscriptionId)/providers/Microsoft.ContainerRegistry/registries?api-version=2019-05-01"
    $Req = Invoke-RestMethod `
        -Headers @{Authorization = "Bearer $($Token.access_token)"} `
        -URI $URI `
        -UseBasicParsing `
        -Method "GET" `
        -ContentType "application/json"
    If ($Req.value) {
        $ACRs += $Req.value
    }
}

# Get list of tasks under each container registry:
$Tasks = $null
ForEach ($Registry In $ACRs) {
    $URI = "https://management.azure.com/$($Registry.id)/tasks?api-version=2019-04-01"
    $Req = Invoke-RestMethod `
        -Headers @{Authorization = "Bearer $($Token.access_token)"} `
        -URI $URI `
        -UseBasicParsing `
        -Method "GET" `
        -ContentType "application/json"
    If ($Req.value) {
        $Tasks += $Req.value
    }
}

ForEach ($Task In $Tasks) {
    Write-Host "Task ID:" $Task.id
    Write-Host "Task Git repo:" $Task.properties.step.contextPath
    Write-Host "Task YAML:" $Task.properties.step.taskFilePath
    Write-Host ""
}