Add openSUSE 15.6 back using opensuse15-testing feed

[Copilot]

• Update openSUSE 15.6 Dockerfile to use the same opensuse15-testing package feed as 16.0
• Add openSUSE 15.6 platform entry to manifest.json to enable building
• Verify the changes align with the 16.0 implementation
• Run code review
• Run security checks
• Remove empty platforms entry from manifest.json to match other manifests

Summary

Successfully added openSUSE 15.6 back to the build system with the following changes:

Changes Made:

1. Updated src/opensuse/15.6/helix/amd64/Dockerfile:

   • Changed from using zypper addrepo with the production feed to directly downloading the libmsquic RPM package from the opensuse15-testing feed
   • Added ARG LIBMSQUIC_VERSION=2.4.17~rc2 to specify the RC version that has correct dependencies (libcrypto.so.3)
   • Added comments explaining why the testing feed is used and referencing the upstream issue
   • This matches the approach used in openSUSE 16.0

2. Updated src/opensuse/manifest.json:

   • Added the openSUSE 15.6 platform entry to enable building
   • Removed empty platforms entry to match the pattern in other manifest.json files
   • Entry includes proper dockerfile path, OS version (leap15.6), and tag name (opensuse-15.6-helix-amd64)

Key Details:

• Both openSUSE 15.6 and 16.0 now use the same libmsquic package feed: https://packages.microsoft.com/yumrepos/microsoft-opensuse15-testing-prod/
• Both use the same libmsquic version: 2.4.17~rc2
• Version-specific differences preserved:
  • 15.6 uses Python 3.12, 16.0 uses Python 3.13
  • 15.6 uses libunwind, 16.0 uses libunwind8
  • These differences match the original implementation in PR Add openSUSE 16.0 helix image #1530

Validation:

• JSON manifest validated successfully
• Code review completed with no blocking issues
• Security scan completed with no vulnerabilities
• Changes are minimal and follow the pattern of other manifest.json files

Original prompt

Please add openSUSE 15.6 back. use the same package feed as was used for openSUSE 16.0.

Context:

• Add openSUSE 16.0 helix image #1530
• Disable OpenSUSE Dockerfile from being built #1543

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[richlander]

@copilot The empty platform entry at the start of manifest.json can be removed. I assume the other manifest.json files do not have this pattern.

[Copilot]

@copilot The empty platform entry at the start of manifest.json can be removed. I assume the other manifest.json files do not have this pattern.

Removed the empty platforms entry in 727f03e. The manifest now matches the pattern used in other manifest.json files.