JDBetteridge/unique ci docker tag

[JDBetteridge]

DONT MERGE THIS UNTIL YOU HAVE ASKED IF IT'S READY ON SLACK!!!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.79%. Comparing base (7aae8d9) to head (a355301).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2868      +/-   ##
==========================================
+ Coverage   79.04%   82.79%   +3.75%     
==========================================
  Files         248      248              
  Lines       51208    51208              
  Branches     4425     4425              
==========================================
+ Hits        40479    42400    +1921     
+ Misses       9921     8034    -1887     
+ Partials      808      774      -34     

Flag	Coverage Δ
pytest-gpu-aomp-amdgpuX	68.74% <ø> (?)
pytest-gpu-gcc-	77.90% <ø> (?)
pytest-gpu-icx-	77.51% <ø> (?)

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