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.  

port_ranges.append([start_port, ports_list[i]])
        last_port = ports_list[i]
    port_mappings = ' '.join(
        '-p {start}-{end}:{start}-{end}'.format(start=entry[0], end=entry[1])
        if entry[0] < entry[1] else '-p {port}:{port}'.format(port=entry[0])
        for entry in port_ranges)
    if services:
        port_mappings = ''
        for service, port in service_ports.items():
            port_mappings += ' -p {port}:{port}'.format(port=port)
    env_str = ''
    for env_var in config.CONFIG_ENV_VARS:
        value = os.environ.get(env_var, None)
        if value is not None:
            env_str += '-e %s="%s" ' % (env_var, value)
    data_dir_mount = ''
    data_dir = os.environ.get('DATA_DIR', None)
    if data_dir is not None:
        container_data_dir = '/tmp/localstack_data'
        data_dir_mount = '-v "%s:%s" ' % (data_dir, container_data_dir)
        env_str += '-e DATA_DIR="%s" ' % container_data_dir
    interactive = '' if force_noninteractive or in_ci() else '-it '
    
    user_flags = '%s ' % user_flags if user_flags else user_flags
    entrypoint = '%s ' % entrypoint if entrypoint else entrypoint
    plugin_run_params = '%s ' % plugin_run_params if plugin_run_params else plugin_run_params
    container_name = 'localstack_main'
    docker_cmd = ('docker run %s%s%s%s%s' +
        '--rm --privileged ' +
        '--name %s ' +