Hi, when I use the latest version I get an error when calling a Lambda. 

I get this error:
Lambda process returned error status code: 1. Output:
awssvc           | 2019-05-10T22:23:19.822966331Z Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.29/containers/create: dial unix /var/run/docker.sock: connect: permission denied
awssvc           | 2019-05-10T22:23:19.822969899Z must specify at least one container source

I'am using the Lambda in a docker. 

You can find my setup here: https://github.com/blaart/stream-my-changes
After forcing to use the 0.9.1 version all works fine again.  

for api in apis:
        persistence.restore_persisted_data(api)
def register_signal_handlers():
    global SIGNAL_HANDLERS_SETUP
    if SIGNAL_HANDLERS_SETUP:
        return
    
    def signal_handler(signal, frame):
        stop_infra()
        os._exit(0)
    signal.signal(signal.SIGTERM, signal_handler)
    signal.signal(signal.SIGINT, signal_handler)
    SIGNAL_HANDLERS_SETUP = True
def is_debug():
    return os.environ.get('DEBUG', '').strip() not in ['', '0', 'false']
def do_run(cmd, asynchronous, print_output=False, env_vars={}):
    sys.stdout.flush()
    if asynchronous:
        if is_debug():
            print_output = True
        outfile = subprocess.PIPE if print_output else None
        t = ShellCommandThread(cmd, outfile=outfile, env_vars=env_vars)
        t.start()
        TMP_THREADS.append(t)
        return t
    else:
        return run(cmd)
def start_proxy_for_service(service_name, port, default_backend_port, update_listener, quiet=False, params={}):