Tuleap-Docker : Make autoload-docker return error

Question

i'm working on a tuleap project that's run in a docker container , i added new classes and i want to apply a refresh to the autoload file so this the Link that help me to do this,

https://tuleap.net/doc/en/developer-guide/autoload.html

But when i execute

make autoload-docker

I have this error

docker:unauthorized authentication required

Any one can help me to resolve this issue ?Thx.marwen