fix(down): Use stop rather than down to avoid removing containers

[IanWoodard]

Ideally we shouldn't be removing containers when we run down since it makes bringing things back up slower and negatively impacts the functionality of purge.
https://getsentry.atlassian.net/browse/DEVINFRA-571

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.89%. Comparing base (f22580a) to head (08c6022).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #194   +/-   ##
=======================================
  Coverage   92.89%   92.89%           
=======================================
  Files          22       22           
  Lines        1477     1477           
=======================================
  Hits         1372     1372           
  Misses        105      105           

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