feat: automatically create network specified via --network option if it does not exist

[zmheiko]

Relevant issue or PR

#530 documents how to use the --network option and needs updating once this PR is merged.

Description of changes

When --network <name> is passed to tesseract serve or tesseract run and no network with that name exists, we now automatically create it instead of failing with a Docker error.

Testing done

Tested that multi-Tesseract hello world example works without explicit network creation.

[codecov]

Codecov Report

❌ Patch coverage is 56.75676% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.86%. Comparing base (fcff6c9) to head (d196612).

Files with missing lines	Patch %	Lines
tesseract_core/sdk/docker_client.py	57.14%	9 Missing ⚠️
tesseract_core/sdk/engine.py	56.25%	5 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #544      +/-   ##
==========================================
- Coverage   77.31%   76.86%   -0.45%     
==========================================
  Files          32       32              
  Lines        4381     4418      +37     
  Branches      723      728       +5     
==========================================
+ Hits         3387     3396       +9     
- Misses        701      726      +25     
- Partials      293      296       +3     

☔ 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.

🚀 1 faster, ⚠️ 0 slower, ✅ 35 unchanged

Notable changes

Benchmark	Baseline	Current	Change	Status
http/apply_1,000	4.920ms	3.836ms	-22.0%	🚀 faster

Full results

Benchmark	Baseline	Current	Change	Status
api/apply_1,000	0.782ms	0.780ms	-0.3%	✅
api/apply_100,000	0.792ms	0.769ms	-2.9%	✅
api/apply_10,000,000	0.792ms	0.771ms	-2.7%	✅
cli/apply_1,000	2002.826ms	1904.749ms	-4.9%	✅
cli/apply_100,000	1974.711ms	1843.437ms	-6.6%	✅
cli/apply_10,000,000	2018.659ms	2031.074ms	+0.6%	✅
decoding/base64_1,000	0.038ms	0.037ms	-2.7%	✅
decoding/base64_100,000	0.898ms	0.897ms	-0.1%	✅
decoding/base64_10,000,000	102.403ms	100.286ms	-2.1%	✅
decoding/binref_1,000	0.203ms	0.199ms	-2.0%	✅
decoding/binref_100,000	0.244ms	0.240ms	-1.5%	✅
decoding/binref_10,000,000	11.280ms	10.614ms	-5.9%	✅
decoding/json_1,000	0.108ms	0.107ms	-1.3%	✅
decoding/json_100,000	9.419ms	8.953ms	-4.9%	✅
decoding/json_10,000,000	1085.670ms	1067.833ms	-1.6%	✅
encoding/base64_1,000	0.042ms	0.040ms	-4.0%	✅
encoding/base64_100,000	0.149ms	0.146ms	-1.8%	✅
encoding/base64_10,000,000	28.149ms	27.194ms	-3.4%	✅
encoding/binref_1,000	0.310ms	0.304ms	-1.8%	✅
encoding/binref_100,000	0.496ms	0.478ms	-3.6%	✅
encoding/binref_10,000,000	20.022ms	19.594ms	-2.1%	✅
encoding/json_1,000	0.153ms	0.154ms	+0.2%	✅
encoding/json_100,000	13.862ms	14.144ms	+2.0%	✅
encoding/json_10,000,000	1429.433ms	1442.695ms	+0.9%	✅
http/apply_1,000	4.920ms	3.836ms	-22.0%	🚀 faster
http/apply_100,000	11.499ms	10.722ms	-6.8%	✅
http/apply_10,000,000	799.753ms	780.327ms	-2.4%	✅
roundtrip/base64_1,000	0.092ms	0.089ms	-2.4%	✅
roundtrip/base64_100,000	1.059ms	1.054ms	-0.4%	✅
roundtrip/base64_10,000,000	129.753ms	127.209ms	-2.0%	✅
roundtrip/binref_1,000	0.530ms	0.520ms	-1.8%	✅
roundtrip/binref_100,000	0.728ms	0.725ms	-0.4%	✅
roundtrip/binref_10,000,000	31.885ms	29.943ms	-6.1%	✅
roundtrip/json_1,000	0.275ms	0.276ms	+0.4%	✅
roundtrip/json_100,000	20.325ms	20.198ms	-0.6%	✅
roundtrip/json_10,000,000	2488.797ms	2517.508ms	+1.2%	✅

• Runner: Linux 6.17.0-1008-azure x86_64

[dionhaefner]

Thanks!