Dont build extension from source

[cedricziel]

Extension was moved to subdir thus image couldnt be built

[codecov]

Codecov Report

Merging #182 (090d70c) into main (8f69ac2) will not change coverage.
The diff coverage is n/a.

❗ Current head 090d70c differs from pull request most recent head c45a43b. Consider uploading reports for the commit c45a43b to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #182   +/-   ##
=========================================
  Coverage     32.62%   32.62%           
  Complexity      783      783           
=========================================
  Files            69       69           
  Lines          2970     2970           
=========================================
  Hits            969      969           
  Misses         2001     2001           

Flag	Coverage Δ
7.4	46.08% <ø> (ø)
8.0	34.83% <ø> (ø)
8.1	34.87% <ø> (ø)
8.2	32.56% <ø> (ø)

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