fix: strip leading slash from Docker container names

[CybotTM]

Summary

• Strip leading / from container names returned by Docker API
• Fixes web UI job history returning 404 due to malformed URLs

Root Cause

Docker API returns container names with a leading slash (e.g., /my-container). When used in job names, this caused web UI history requests to fail:

Container name from API: /my-container
Job name: /my-container.job-name
History URL: /api/jobs//my-container.job-name/history  ← Double slash causes 404

Fix

In core/adapters/docker/convert.go, strip the leading slash when converting from Docker API container summary.

Test plan

• Added regression tests that fail without the fix
• Tests pass with fix applied
• Full test suite passes
• Linting passes

Fixes #422

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[github-actions]

⚠️ Mutation Testing Results

Mutation Score: 0.00% (threshold: 60%)

⚠️ Score is below threshold. Consider improving test coverage or test quality.

What is mutation testing?

Mutation testing measures test quality by introducing small changes (mutations) to the code and checking if tests detect them. A higher score means better test effectiveness.

• Killed mutants: Tests caught the mutation (good!)
• Survived mutants: Tests missed the mutation (needs improvement)

[Copilot]

Pull request overview

This PR fixes a bug where Docker container names with leading slashes caused malformed URLs in the web UI, resulting in 404 errors when accessing job history. The fix strips the leading slash from container names returned by the Docker API's ContainerList endpoint.

Key Changes

• Strip leading / from container names in convertFromAPIContainer function
• Update tests to expect container names without leading slashes
• Add comprehensive regression test comments referencing issue #422

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
core/adapters/docker/convert.go	Added strings import and modified convertFromAPIContainer to strip leading slash from container names using strings.TrimPrefix
core/adapters/docker/convert_test.go	Updated all test cases to expect container names without leading slashes and added clear regression test comments