Quilt links are not downloadable via curl

[pgarrison]

This issue is about the work-in-progress branch for colony mask inference reproducibility, sm_colony_mask_pred_test_v0.

Issue

The instructions ask the user to download a file from the following link.

https://open.quiltdata.com/b/allencell/tree/aics/emt_timelapse_dataset/supplemental_files/cytodl_checkpoints/all_cells_mask_seg_model_checkpoint.ckpt

Users may attempt to download via curl https://open.quiltdata.com/b/allencell/tree/aics/emt_timelapse_dataset/supplemental_files/cytodl_checkpoints/all_cells_mask_seg_model_checkpoint.ckpt, but this gets the HTML of the Quilt website.

Fix: Option 1

Update the instructions to clarify that the user should navigate to that link in the browser and then click the "Download File" button.

The drawback of this approach is that it is harder to automate.

Fix: Option 2

Replace the link with one of the following.

• Single immutable version: https://allencell.s3.amazonaws.com/aics/emt_timelapse_dataset/supplemental_files/cytodl_checkpoints/all_cells_mask_seg_model_checkpoint.ckpt?versionId=ejf07rBiw5slyx1zQyurfX6.zpSJ92JM
• Latest version: https://allencell.s3.amazonaws.com/aics/emt_timelapse_dataset/supplemental_files/cytodl_checkpoints/all_cells_mask_seg_model_checkpoint.ckpt
  The drawback of this approach is that the "single immutable version" link may get outdated if we re-train the model, and conversely the data at the "latest version" link may change, creating inconsistency.

[smishra3]

I think we can go ahead with both options and letting the user decide based on their preference. In future, if we update the checkpoint path, we need to update the README to provide the correct immutable version.