[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.