Fix assigning challenge_id instead of task_id when task is specified by name.

Return immediately on error status

Make the timeout in _wait_for_status() calls use the timeout_seconds parameter. This increases the default and makes it configurable.

Fix challenge-cli not setting storage when using --volume and friends. Improve error messages. Fix multiple issues with Dockerfile.gpu. Change make docker-run and make docker-run-gpu to use docker flags that match the Dyff cloud environment by default.

Fix challenge-cli allowing --model without --volume-mount

Allow specifying challenge task by name in addition to ID.

Add GPU Dockerfile and requirements

Add GPU support for inference service

Fix 404 handling

Download model weights in Dockerfile. Large revision of README to include submission instructions. Add challenge-cli.py to make uploading via the Dyff API easier.