### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

The use case I have in mind is to run Node 16.x Lambdas - the default container registry is `lambci/lambda` which is effectively abandoned. [Not even Node 14.x has been published](https://github.com/lambci/docker-lambda/pull/330). However, switching the registry over to [`amazon/aws-lambda-nodejs`](https://hub.docker.com/r/amazon/aws-lambda-nodejs) still fails to pull the container, since localstack is looking for the tag `nodejs16.x`. I'd like to be able to specify that if the runtime is `nodejs16.x` it just looks for tag `16`.

### 🧑‍💻 Implementation

_No response_

### Anything else?

_No response_
)
        result_data = result["Payload"].read()
        assert 202 == result["StatusCode"]
        assert "" == to_str(result_data).strip()
    @parametrize_java_runtimes
    def test_stream_handler(self, lambda_client, create_lambda_function, test_java_jar, runtime):
        function_name = f"test-lambda-{short_uid()}"
        create_lambda_function(
            func_name=function_name,
            zip_file=test_java_jar,
            runtime=runtime,
            handler="cloud.localstack.awssdkv1.sample.LambdaStreamHandler",
        )
        result = lambda_client.invoke(
            FunctionName=function_name,
            Payload=b'{"echo":"echo"}',
        )
        result_data = result["Payload"].read()
        assert 200 == result["StatusCode"]
        assert "{}" == to_str(result_data).strip()
    @parametrize_java_runtimes
    @pytest.mark.skip_snapshot_verify
    def test_serializable_input_object(
        self, lambda_client, create_lambda_function, test_java_zip, runtime, snapshot
    ):
        snapshot.add_transformer(snapshot.transform.lambda_api())
        
        function_name = f"test-lambda-{short_uid()}"
        create_result = create_lambda_function(
            func_name=function_name,