Error when building docker image for RediSearch /bin/sh: 1: ./deps/readies/bin/getpy2: not found

I am building docker image using https://github.com/RediSearch/RediSearch/blob/master/docker/Dockerfile but stuck with one error /bin/sh: 1: ./deps/readies/bin/getpy2: not found
i am using Ubuntu x86_64 machine

Please invoke docker from the RediSearch repo root directory, e.g. docker build -t redisearch -f docker/Dockerfile . or simply run make docker.

Yes.working.Thank you