### 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_
if not os.path.exists(THUNDRA_PYTHON_AGENT_LOCAL_PATH):
        install.log_install_msg("Thundra Python agent", verbatim=True)
        try:
            install_thundra_cmd = "pip install --target=%s thundra==%s --no-warn-conflicts" % (
                THUNDRA_PYTHON_AGENT_LOCAL_PATH,
                THUNDRA_PYTHON_AGENT_VERSION,
            )
            common.run(install_thundra_cmd.split())
        except Exception as e:
            print("Unable to install Thundra Python agent: %s" % e)
            return False
    return True
def _is_python_lambda_with_support_version(func_details):
    runtime = getattr(func_details, "runtime", func_details)
    return runtime in [
        LAMBDA_RUNTIME_PYTHON36,
        LAMBDA_RUNTIME_PYTHON37,
        LAMBDA_RUNTIME_PYTHON38,