How to properlly create OpenSearch cluster using LocalStack container.

[jusexton]

Having trouble creating a OpenSearch cluster using the LocalStack container. I would expect at the very least a simple single node cluster to be created without any configuration needed. Something like the below would be awesome:

LocalStackContainer container = new LocalStackBuilder().Build();
container.Start();

var uri = new Uri(_container.GetConnectionString());
var client = new OpenSearchClient(uri);

// Results in 404 because a cluster was never created.
var response = client.Cluster.Health()

I've read through https://docs.localstack.cloud/user-guide/aws/opensearch/ but these instructions dont seem to translate to testcontainers super easily due to not being able to easily create a domain/cluster via c#. Any ideas?