How to use an onsite S3-compatible storage system

[pbojanic]

Hi, I'm working with the latest NeMo Framework container (nvcr.io/nvidia/nemo:dev) and I'd like to use distributed S3 checkpoints with an internal S3-compatible storage system.

I'm following the guidance here: https://docs.nvidia.com/nemo-framework/user-guide/latest/nemotoolkit/common/s3_checkpointing.html

I don't see any evidence of being able to specify an endpoint_url, ca certificate, etc. There are also some glaring omissions from the NeMo container, like tenancity, which is reported by an error message as a missing dependency.

I also found some guidance here about S3 support but it seems to be outdated: #7832.

Can you please provide guidance on how to make this work?