Improved checking for missing containers when stopping them to prevent a failure.

        stop_command = 'ssh -o LogLevel=ERROR -i {} -4 -o StrictHostKeyChecking=no {}@{} \'/bin/bash -c "{}"\''.format(computing_keys.private_key_file, computing_user, computing_host, internal_stop_command)

        out = os_shell(stop_command, capture=True)

        if out.exit_code != 0:

            if ('No such process' in out.stderr) or ('No such container' in out.stderr) or ('no container' in out.stderr):

            if ('No such process' in out.stderr) or ('No such container' in out.stderr) or ('no container' in out.stderr) or ('missing' in out.stderr):

                pass

            else:

                raise Exception(out.stderr)