### 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_
LOG.debug("Getting all lambda containers names.")
            list_result = DOCKER_CLIENT.list_containers(
                filter=f"name={self.get_container_prefix()}*"
            )
            container_names = list(map(lambda container: container["name"], list_result))
            return container_names
    def destroy_existing_docker_containers(self):
        """
        Stops and/or removes all lambda docker containers for localstack.
        :return: None
        """
        with self.docker_container_lock:
            container_names = self.get_all_container_names()
            LOG.debug("Removing %d containers.", len(container_names))
            for container_name in container_names:
                DOCKER_CLIENT.remove_container(container_name)
    def get_docker_container_status(self, func_arn):
        """
        Determine the status of a docker container.
        :param func_arn: The ARN of the lambda function.
        :return: 1 If the container is running,
        -1 if the container exists but is not running
        0 if the container does not exist.
        """
        with self.docker_container_lock:
            
            container_name = self.get_container_name(func_arn)
            container_status = DOCKER_CLIENT.get_container_status(container_name)
            return container_status.value
    def get_docker_container_network(self, func_arn):