ServiceRadar v1.0.53-pre18

Kong packaging automation and vendor refresh.

Whats New

1.0.53-pre18

• Added scripts/build-kong-vendor.sh to clone the pinned Kong commit and build OSS RPM/DEB artifacts automatically.
• Release workflow now runs the helper so Kong binaries ship with every GitHub release.
• Documented the new flow in packaging/kong/README.md and clarified the expected versioned filenames.