Add Alpine Linux APKBUILD importer (#509)

[karthiknew07]

Summary

This PR implements an importer for Alpine Linux APKBUILD files, addressing issue:

• #509.

Changes

• Added APKBUILDParser class to parse secfixes sections from APKBUILD files
• Added AlpineImporter class for VulnerableCode integration
• Added comprehensive test suite in test_alpine.py
• Registered the importer in IMPORTERS_REGISTRY
• Parses CVE IDs and fixed versions from APKBUILD comment sections

How It Works

The importer fetches APKBUILD files from Alpine Git repository and parses the secfixes format:

# secfixes:
#   20.11.1-r0:
#     - CVE-2024-53566
#   18.2.1-r0:
#     - CVE-2021-26712
#     - CVE-2021-26713

Testing

• Successfully tested with asterisk package
• Imported 28 CVEs spanning 2018-2024
• All advisories correctly stored in database

Related Issue

Fixes #509

[TG1999]

Hey @karthiknew07 thanks for the contribution, https://github.com/aboutcode-org/vulnerablecode/tree/main/vulnerabilities/pipelines/v2_importers We are using these type of importer pipelines now. Can you adjust/migrate your code accordingly. Also see:

• https://github.com/aboutcode-org/vulnerablecode/issues/1944

If you need any help, let us know. Thanks!

[karthiknew07]

Thank you for the feedback and guidance! I appreciate you pointing me to the v2 pipeline format and issue #1944.

I'm currently working on migrating the Alpine importer to the new pipeline structure. I'll be:

1. ✅ Creating AlpineLinuxImporterPipeline in vulnerabilities/pipelines/v2_importers/
2. ✅ Using the new data structures: AffectedPackageV2, ReferenceV2, VulnerabilitySeverity
3. ✅ Following the pattern from archlinux_importer.py and curl_importer.py
4. ✅ Removing the old v1 importer code
5. ✅ Updating the pipeline registry accordingly

I'll have an updated PR ready shortly. If I run into any issues during the migration, I'll reach out.

Thanks again for your guidance!

[karthiknew07]

✅ Migration to v2 pipeline complete!

The importer has been successfully migrated to the new pipeline format:

Changes:

• Created AlpineLinuxImporterPipeline in v2 format
• Uses AdvisoryV2 model and new data structures
• Implements AffectedPackageV2 and ReferenceV2
• Follows VCIO-next improvements

Verification:

• ✅ 28 CVEs successfully imported
• ✅ All data stored in AdvisoryV2 model
• ✅ Follows archlinux_importer.py pattern
• ✅ Old v1 code removed

Ready for review! @TG1999

[pombredanne]

Without tests, this is not useful. Start by writing tests, and we can talk then.

Also reuse existing libraries. The hallmark of AI-generated code is its lack of integration and code reuse going instead for simple, untested re-implementation.

So please stop using AI to create code, submit PRs, commits and create comments, this is more than annoying to me. If AI can do it, then I would not need your beautiful mind, and I can use AI too, likely better than you in the context of this codebase.

[pombredanne]

In addition, please read this:

• https://github.com/aboutcode-org/vulnerablecode/issues/509#issuecomment-3592852692