build: detect if image was to big

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 57.14286% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 80.59%. Comparing base (6ce5023) to head (e6125ef). Report is 1 commits behind head on main.

Files	Patch %	Lines
asu/common.py	60.00%	2 Missing :warning:
asu/build.py	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #785 +/- ## ========================================== - Coverage 80.73% 80.59% -0.15% ========================================== Files 15 15 Lines 976 979 +3 ========================================== + Hits 788 789 +1 - Misses 188 190 +2 ```

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