The docker-publish.yml workflow was missing pull:true, causing it
to use cached Alpine images with vulnerable c-ares 1.34.5-r0.
This completes the fix across all three Docker workflows:
- docker-build.yml ✓
- docker-publish.yml ✓ (this commit)
- security-weekly-rebuild.yml ✓
Resolves CVE-2025-62408 (c-ares)