Force delete your images object from ecr repository

ConsoleApp.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="AWSSDK.ECR" Version="3.7.4.58" />
    <PackageReference Include="AWSSDK.SecurityToken" Version="3.7.1.189" />
  </ItemGroup>

</Project>

ForceDeleteAllImages.cs

using Amazon.ECR.Model;

async Task Main()
{
  var repositories = new[]
  {
      "REPOSITORY_NAME",
  };

  foreach (var repository in repositories)
  {
      Console.WriteLine($"Delete all image of ecr: {repository}");

      var client = new Amazon.ECR.AmazonECRClient();
      ListImagesResponse? response = null;
      var count = 0;
      do
      {
          response = await client.ListImagesAsync(new ListImagesRequest
          {
              RepositoryName = repository
          });
          if (response.ImageIds.Count > 0)
          {
              count += response.ImageIds.Count;
              if (count % 10000 == 0) Console.WriteLine($"{DateTime.Now}: Deleted {count} objects.");

              await client.BatchDeleteImageAsync(new BatchDeleteImageRequest
              {
                  RepositoryName = repository,
                  ImageIds = response.ImageIds,
              });
          }
      } while (!string.IsNullOrEmpty(response.NextToken));

      Console.WriteLine($"Completed repository image deletion. {repository}");
  }
}