## Problem
Currently, even if `LAMBDA_REMOTE_DOCKER=1`, we unzip the zip files in the directory they are in, which is usually /var/lib/localstack, which usually has a bind mount to the host.
On docker desktop, due to the use of grpc-FUSE (on macos), this can be very slow, about 200 times slower than on volumes / directly on the host. With experimental virtio filesystem enabled (also on macos), this can be reduced to about 30 times as slow, but still problematic.
This means a lambda may take a lot of time processing, for each additional layer some more. This especially affects nodejs lambdas with huge node_modules folders.

## Probable solution
At least if `LAMBDA_REMOTE_DOCKER=1`, we should leave the initial zip files on the bind mount (for persistence etc), but the working directories after unzipping should be located on non-bind mounts, to speed up the IO for unzipping.
remove=container_config.remove,
            network=container_config.network,
            env_vars=container_config.env_vars,
            dns=container_config.dns,
            additional_flags=container_config.additional_flags,
            ports=container_config.ports,
            command=container_config.command,
            mount_volumes=container_config.volumes,
            workdir=container_config.workdir,
            user=container_config.user,
            cap_add=container_config.cap_add,
        )
        if config.LAMBDA_REMOTE_DOCKER:
            for source, target in container_config.required_files:
                DOCKER_CLIENT.copy_into_container(container_id, source, target)
        return DOCKER_CLIENT.start_container(
            container_id,
            interactive=not container_config.detach,
            attach=not container_config.detach,
            stdin=stdin,
        )
class LambdaExecutorLocal(LambdaExecutor):
    
    FUNCTION_CALLABLES: Dict[str, Dict[str, Callable]] = {}
    def _execute_in_custom_runtime(
        self, cmd: Union[str, List[str]], lambda_function: LambdaFunction = None
    ) -> InvocationResult:
        """
        Generic run function for executing lambdas in custom runtimes.
        :param cmd: the command to execute