Update resource configs of one or more containers.

        Args:
            container (str): The container to inspect
            blkio_weight (int): Block IO (relative weight), between 10 and 1000
            cpu_period (int): Limit CPU CFS (Completely Fair Scheduler) period
            cpu_quota (int): Limit CPU CFS (Completely Fair Scheduler) quota
            cpu_shares (int): CPU shares (relative weight)
            cpuset_cpus (str): CPUs in which to allow execution
            cpuset_mems (str): MEMs in which to allow execution
            mem_limit (int or str): Memory limit
            mem_reservation (int or str): Memory soft limit
            memswap_limit (int or str): Total memory (memory + swap), -1 to
                disable swap
            kernel_memory (int or str): Kernel memory limit
            restart_policy (dict): Restart policy dictionary

        Returns:
            (dict): Dictionary containing a ``Warnings`` key.

        Raises:
            :py:class:`docker.errors.APIError`
                If the server returns an error.

def update_container(
        self, container, blkio_weight=None, cpu_period=None, cpu_quota=None,
        cpu_shares=None, cpuset_cpus=None, cpuset_mems=None, mem_limit=None,
        mem_reservation=None, memswap_limit=None, kernel_memory=None,
        restart_policy=None
    ):
        """
        Update resource configs of one or more containers.

        Args:
            container (str): The container to inspect
            blkio_weight (int): Block IO (relative weight), between 10 and 1000
            cpu_period (int): Limit CPU CFS (Completely Fair Scheduler) period
            cpu_quota (int): Limit CPU CFS (Completely Fair Scheduler) quota
            cpu_shares (int): CPU shares (relative weight)
            cpuset_cpus (str): CPUs in which to allow execution
            cpuset_mems (str): MEMs in which to allow execution
            mem_limit (int or str): Memory limit
            mem_reservation (int or str): Memory soft limit
            memswap_limit (int or str): Total memory (memory + swap), -1 to
                disable swap
            kernel_memory (int or str): Kernel memory limit
            restart_policy (dict): Restart policy dictionary

        Returns:
            (dict): Dictionary containing a ``Warnings`` key.

        Raises:
            :py:class:`docker.errors.APIError`
                If the server returns an error.
        """
        url = self._url('/containers/{0}/update', container)
        data = {}
        if blkio_weight:
            data['BlkioWeight'] = blkio_weight
        if cpu_period:
            data['CpuPeriod'] = cpu_period
        if cpu_shares:
            data['CpuShares'] = cpu_shares
        if cpu_quota:
            data['CpuQuota'] = cpu_quota
        if cpuset_cpus:
            data['CpusetCpus'] = cpuset_cpus
        if cpuset_mems:
            data['CpusetMems'] = cpuset_mems
        if mem_limit:
            data['Memory'] = utils.parse_bytes(mem_limit)
        if mem_reservation:
            data['MemoryReservation'] = utils.parse_bytes(mem_reservation)
        if memswap_limit:
            data['MemorySwap'] = utils.parse_bytes(memswap_limit)
        if kernel_memory:
            data['KernelMemory'] = utils.parse_bytes(kernel_memory)
        if restart_policy:
            if utils.version_lt(self._version, '1.23'):
                raise errors.InvalidVersion(
                    'restart policy update is not supported '
                    'for API version < 1.23'
                )
            data['RestartPolicy'] = restart_policy

        res = self._post_json(url, data=data)
        return self._result(res, True)