fix: Always become root at the start of docker builds

[dionhaefner]

Relevant issue or PR

n/a

Description of changes

Currently, builds fail during apt-get when base images set a non-root USER. This fixes it by explicitly acquiring root permissions at the start of every build.

Testing done

None.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.07%. Comparing base (08a5bf0) to head (792968c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #598   +/-   ##
=======================================
  Coverage   77.07%   77.07%           
=======================================
  Files          32       32           
  Lines        4492     4492           
  Branches      738      738           
=======================================
  Hits         3462     3462           
  Misses        727      727           
  Partials      303      303           

☔ 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
roundtrip/base64_100,000	0.768ms	0.875ms	+14.0%	⚠️ slower

Full results

Benchmark	Baseline	Current	Change	Status
api/apply_1,000	0.494ms	0.493ms	-0.2%	✅
api/apply_100,000	0.494ms	0.496ms	+0.3%	✅
api/apply_10,000,000	0.496ms	0.495ms	-0.1%	✅
cli/apply_1,000	1643.217ms	1642.004ms	-0.1%	✅
cli/apply_100,000	1656.156ms	1655.592ms	-0.0%	✅
cli/apply_10,000,000	1686.067ms	1700.601ms	+0.9%	✅
decoding/base64_1,000	0.028ms	0.028ms	-0.2%	✅
decoding/base64_100,000	0.605ms	0.634ms	+4.8%	✅
decoding/base64_10,000,000	71.639ms	71.588ms	-0.1%	✅
decoding/binref_1,000	0.186ms	0.183ms	-2.0%	✅
decoding/binref_100,000	0.235ms	0.233ms	-0.8%	✅
decoding/binref_10,000,000	9.216ms	9.080ms	-1.5%	✅
decoding/json_1,000	0.098ms	0.098ms	+0.0%	✅
decoding/json_100,000	9.358ms	9.340ms	-0.2%	✅
decoding/json_10,000,000	1114.612ms	1110.952ms	-0.3%	✅
encoding/base64_1,000	0.027ms	0.026ms	-0.0%	✅
encoding/base64_100,000	0.143ms	0.143ms	-0.4%	✅
encoding/base64_10,000,000	23.091ms	22.836ms	-1.1%	✅
encoding/binref_1,000	0.277ms	0.275ms	-0.8%	✅
encoding/binref_100,000	0.446ms	0.447ms	+0.3%	✅
encoding/binref_10,000,000	17.242ms	17.152ms	-0.5%	✅
encoding/json_1,000	0.141ms	0.140ms	-1.1%	✅
encoding/json_100,000	14.856ms	14.461ms	-2.7%	✅
encoding/json_10,000,000	1508.250ms	1529.192ms	+1.4%	✅
http/apply_1,000	2.918ms	2.892ms	-0.9%	✅
http/apply_100,000	8.113ms	8.112ms	-0.0%	✅
http/apply_10,000,000	669.128ms	670.642ms	+0.2%	✅
roundtrip/base64_1,000	0.055ms	0.054ms	-1.8%	✅
roundtrip/base64_100,000	0.768ms	0.875ms	+14.0%	⚠️ slower
roundtrip/base64_10,000,000	94.598ms	94.932ms	+0.4%	✅
roundtrip/binref_1,000	0.473ms	0.472ms	-0.2%	✅
roundtrip/binref_100,000	0.691ms	0.686ms	-0.8%	✅
roundtrip/binref_10,000,000	26.622ms	26.621ms	-0.0%	✅
roundtrip/json_1,000	0.247ms	0.245ms	-0.8%	✅
roundtrip/json_100,000	21.617ms	20.975ms	-3.0%	✅
roundtrip/json_10,000,000	2629.086ms	2623.008ms	-0.2%	✅

• Runner: Linux 6.17.0-1013-azure x86_64

[jpbrodrick89]

Looks good!