Use LazyGhosts in containers

[TomHAnderson]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (0d0d9b0) to head (6a51947).
⚠️ Report is 5 commits behind head on 12.5.x.

Additional details and impacted files

@@             Coverage Diff             @@
##              12.5.x      #189   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       411       411           
===========================================
  Files             47        47           
  Lines           1514      1541   +27     
===========================================
+ Hits            1514      1541   +27     

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