SAM2 updated upstream to 2.1 which breaks the SAM2 docker build

Hi,

SAM2 was upgraded to model 2.1. The Download script for checkpoints downloads now by default the 2.1 version.

To fix it, i had to comment in the old 2.0 models (as i tried it manually after issues with the docker version).

The docker build works, but when starting the docker image through docker compose, the following error message happens:

`
FileNotFoundError: [Errno 2] No such file or directory: '/segment-anything-2/checkpoints/sam2_hiera_large.pt'
`

You can see the new checkpoint download script with commented out 2.0 models here: https://github.com/facebookresearch/sam2/blob/main/checkpoints/download_ckpts.sh