### 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_
]
def _prepare_invocation_for_python_lambda(
    context: InvocationContext,
) -> AdditionalInvocationOptions:
    
    _ensure_python_agent_initialized()
    
    if not THUNDRA_PYTHON_AGENT_INITIALIZED:
        return None
    result = AdditionalInvocationOptions()
    
    result.env_updates[THUNDRA_APIKEY_ENV_VAR_NAME] = _get_apikey(context.environment)
    
    result.env_updates[THUNDRA_AGENT_LAMBDA_HANDLER_ENV_VAR_NAME] = context.handler
    result.updated_handler = "thundra.handler.wrapper"
    
    log_disabled = context.environment.get(THUNDRA_AGENT_LOG_DISABLE_ENV_VAR_NAME)
    if not log_disabled:
        result.env_updates[THUNDRA_AGENT_LOG_DISABLE_ENV_VAR_NAME] = "false"
    
    agent_path_mapping = "-v %s/:/opt/python/" % THUNDRA_PYTHON_AGENT_LOCAL_PATH_ON_HOST
    if context.docker_flags:
        context.docker_flags = f"{context.docker_flags} {agent_path_mapping}"
    else:
        context.docker_flags = agent_path_mapping
    return result
class LambdaExecutorPluginThundra(LambdaExecutorPlugin):
    def should_apply(self, context: InvocationContext) -> bool:
        
        if "local" in get_executor_mode():