$ docker login -u dockerbuildbot -p ******** https://index.docker.io/v1/ WARNING! Using --password via the CLI is insecure. Use --password-stdin. WARNING! Your password will be stored unencrypted in /home/ubuntu/workspace/docker-py_PR-2476@tmp/fad2b19d-101d-409a-9b2c-60106cb30716/config.json. Configure a credential helper to remove this warning. See https://docs.docker.com/engine/reference/commandline/login/#credentials-store Login Succeeded