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.  

print('Starting mock %s service (%s port %s)...' % (name, get_service_protocol(), port))
    if asynchronous:
        thread = FuncThread(method, port, quiet=True)
        thread.start()
        TMP_THREADS.append(thread)
        return thread
    else:
        method(port)
def stop_infra():
    if common.INFRA_STOPPED:
        return
    common.INFRA_STOPPED = True
    event_publisher.fire_event(event_publisher.EVENT_STOP_INFRA)
    generic_proxy.QUIET = True
    common.cleanup(files=True, quiet=True)
    common.cleanup_resources()
    lambda_api.cleanup()
    time.sleep(2)
    
    
def check_aws_credentials():