[BUG] - docker tags are wrong in the README.md and run.py

[SamGuay]

What version of the bids app were you using?

Version 6 and Version 7 have the same problem.

Describe your problem in detail.

docker pull bids/freesurfer:6
docker pull bids/freesurfer:7

These 2 commands from the README.md won't work as tags have changed to another format such 7-202309, 7.4.1-202309, etc.

Same with the warn message when v6 is used.

What command did you run?

See above.

Describe what you expected.

I expected docker/apptainer to pull the container but it didn't.

[Remi-Gau]

silly question, do we want those tags to work?

docker pull bids/freesurfer:6
docker pull bids/freesurfer:7

meaning that currently: 7-202309 == 7.4.1-202309

but we may want: 7 == 7-latest == 7-202309 == 7.4.1-202309

[SamGuay]

From a user perspective, I (naively) assumed that copy/paste would work, then I had to go and find the specific tag on docker hub. IMO, having a working tag (7-latest) would be a good start then link to docker hub since it is not that obvious which account is the official one to get all the tags.

Note that once default/latest is changed to v7, it should be less of a problem.

[Remi-Gau]

OK so one PR to update the README for now and we can see for the next release if we want to have more tags.