The alpha package build GitHub Action was failing across all architectures due to git-related issues in Docker containers:

Root Causes:

1. Missing git package: ARM32 builds failed with git: command not found
2. Docker ownership conflicts: ARM64 and x86_64 builds failed with fatal: detected dubious ownership in repository at '/repo'

The build script relies on git commands for changelog generation (lines 190+), but the Docker containers were missing git and experiencing ownership validation failures when accessing the mounted repository.

Changes:

1. build/Dockerfile: Added git to the apt-get install dependencies to ensure git is available in all build containers
2. build.sh: Added git config --global --add safe.directory /repo before git commands to handle Docker ownership validation

Impact:

• ✅ All architectures (x86_64, aarch64, arm) can now execute git commands successfully
• ✅ Changelog generation works properly for alpha, beta, and stable builds
• ✅ No changes to build logic or package configurations
• ✅ Validated with existing test suite - all tests pass

The fix is minimal and surgical, addressing only the specific git-related failures without affecting any other functionality.

Fixes #185.

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