Null Ports property on ListContainersAsync

Start at Containers.ListContainersAsync and the container model's Ports property, using the supplied call with All=true to reproduce a response where Ports is null. Done means containers without ports expose an empty IList rather than null, with regression coverage for that response.

Hi, I found that some containers returned by ListContainersAsync may have a null Ports property instead of returning an empty IList.

Code Example

// DockerClient injected via DI
var dockerContainers = await _dockerClient.Containers.ListContainersAsync(
    new ContainersListParameters { All = true }, cancellationToken);

foreach(var dockerContainer in dockerContainers)
{
    // Ports property may be null
    var ports = dockerContainer.Ports;
}

Inspected Example

In this example you can see the informations related to a container that actuallly has null Ports property.

System Info

Result of dotnet --info:

.NET SDK:
 Version:           10.0.201
 Commit:            4d3023de60
 Workload version:  10.0.200-manifests.121cc9e6
 MSBuild version:   18.3.0-release-26153-122+4d3023de6

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.26200
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\10.0.201\

.NET workloads installed:
There are no installed workloads to display.
Configured to use workload sets when installing new manifests.
No workload sets are installed. Run "dotnet workload restore" to install a workload set.

Host:
  Version:      10.0.5
  Architecture: x64
  Commit:       a612c2a105

.NET SDKs installed:
  10.0.201 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 10.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.22 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 10.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 10.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  DOTNET_CLI_UI_LANGUAGE                   [en-US]
  DOTNET_GCHeapCount                       [2]
  DOTNET_GCNoAffinitize                    [1]
  DOTNET_MULTILEVEL_LOOKUP                 [0]
  DOTNET_TC_CallCountThreshold             [1000]
  DOTNET_ThreadPool_UnfairSemaphoreSpinLimit [0]
  DOTNET_gcConcurrent                      [0]
  Detected COMPlus_* environment variable(s). Consider transitioning to DOTNET_* equivalent.

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

Docker.DotNet Version:
3.125.15