fix: force building for the current arch when platform is set to native

[dionhaefner]

Relevant issue or PR

n/a

Description of changes

When not specifying a platform arg, Docker will pull what's available which may not match the native processor arch. Since Tesseract explicitly documents this as "build for the native architecture", we should force a platform and fail loudly when it's not available.

Testing done

none

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.20%. Comparing base (6924be0) to head (3d7574e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #615   +/-   ##
=======================================
  Coverage   77.20%   77.20%           
=======================================
  Files          32       32           
  Lines        4528     4528           
  Branches      743      743           
=======================================
  Hits         3496     3496           
  Misses        727      727           
  Partials      305      305           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[PasteurBot]

Benchmark Results

Benchmarks use a no-op Tesseract to measure pure framework overhead.

🚀 0 faster, ⚠️ 1 slower, ✅ 35 unchanged

Notable changes

Benchmark	Baseline	Current	Change	Status
decoding/base64_100,000	0.611ms	0.803ms	+31.4%	⚠️ slower

Full results

Benchmark	Baseline	Current	Change	Status
api/apply_1,000	0.496ms	0.500ms	+0.9%	✅
api/apply_100,000	0.496ms	0.494ms	-0.2%	✅
api/apply_10,000,000	0.496ms	0.495ms	-0.3%	✅
cli/apply_1,000	1693.009ms	1716.085ms	+1.4%	✅
cli/apply_100,000	1687.771ms	1726.663ms	+2.3%	✅
cli/apply_10,000,000	1810.266ms	1757.905ms	-2.9%	✅
decoding/base64_1,000	0.029ms	0.028ms	-0.5%	✅
decoding/base64_100,000	0.611ms	0.803ms	+31.4%	⚠️ slower
decoding/base64_10,000,000	70.657ms	70.469ms	-0.3%	✅
decoding/binref_1,000	0.184ms	0.183ms	-0.4%	✅
decoding/binref_100,000	0.235ms	0.235ms	+0.1%	✅
decoding/binref_10,000,000	8.935ms	8.743ms	-2.1%	✅
decoding/json_1,000	0.098ms	0.098ms	-0.7%	✅
decoding/json_100,000	9.443ms	9.481ms	+0.4%	✅
decoding/json_10,000,000	1110.035ms	1109.346ms	-0.1%	✅
encoding/base64_1,000	0.028ms	0.028ms	-0.0%	✅
encoding/base64_100,000	0.144ms	0.143ms	-0.7%	✅
encoding/base64_10,000,000	21.734ms	21.857ms	+0.6%	✅
encoding/binref_1,000	0.275ms	0.273ms	-0.5%	✅
encoding/binref_100,000	0.449ms	0.448ms	-0.2%	✅
encoding/binref_10,000,000	16.711ms	16.807ms	+0.6%	✅
encoding/json_1,000	0.141ms	0.141ms	-0.0%	✅
encoding/json_100,000	14.850ms	14.552ms	-2.0%	✅
encoding/json_10,000,000	1510.559ms	1519.314ms	+0.6%	✅
http/apply_1,000	3.004ms	2.944ms	-2.0%	✅
http/apply_100,000	9.692ms	8.761ms	-9.6%	✅
http/apply_10,000,000	664.590ms	666.848ms	+0.3%	✅
roundtrip/base64_1,000	0.058ms	0.058ms	+0.3%	✅
roundtrip/base64_100,000	0.764ms	0.763ms	-0.1%	✅
roundtrip/base64_10,000,000	92.389ms	92.080ms	-0.3%	✅
roundtrip/binref_1,000	0.471ms	0.473ms	+0.4%	✅
roundtrip/binref_100,000	0.691ms	0.682ms	-1.3%	✅
roundtrip/binref_10,000,000	25.822ms	25.633ms	-0.7%	✅
roundtrip/json_1,000	0.245ms	0.246ms	+0.6%	✅
roundtrip/json_100,000	21.739ms	21.616ms	-0.6%	✅
roundtrip/json_10,000,000	2625.989ms	2640.613ms	+0.6%	✅

• Runner: Linux 6.17.0-1015-azure x86_64