ci: Switch to using the same image for builds and Docker

[notheotherben]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 54.79452% with 33 lines in your changes missing coverage. Please review.

Project coverage is 69.10%. Comparing base (b4b0b6a) to head (7778b23).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/filter/value.rs	0.00%	16 Missing ⚠️
src/filter/lexer.rs	66.66%	12 Missing ⚠️
src/main.rs	0.00%	3 Missing ⚠️
src/engines/http_file.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #216   +/-   ##
=======================================
  Coverage   69.10%   69.10%           
=======================================
  Files          24       24           
  Lines        2198     2198           
=======================================
  Hits         1519     1519           
  Misses        679      679           

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