Fix issues with CI

[mattleibow]

This pull request updates the Docker build scripts and related CI configuration to improve cross-platform builds, standardize architecture selection, and enhance support for additional architectures like LoongArch. The main changes involve switching from the deprecated IMAGE_ARCH mechanism to the modern --platform Docker flag, updating architecture-specific build arguments, and refining package selection for certain platforms.

Docker platform and architecture handling:

• Replaced the use of the IMAGE_ARCH variable and ${IMAGE_ARCH}/debian image references in all relevant Dockerfiles with the --platform flag and standard base images (e.g., FROM debian:12), aligning with best practices for multi-architecture Docker builds. [1] [2] [3] [4] [5]
• Updated the scripts/Docker/_clang-cross-common.sh script to set the Docker PLATFORM variable based on the detected machine architecture and to use --platform when building images, removing the obsolete IMAGE_ARCH argument. [1] [2]

Architecture-specific build improvements:

• Added support for passing extra build arguments (e.g., --verifyGlibcMax=2.38) for specific architectures like loongarch64 in the Docker build script, ensuring compatibility with CI configuration. [1] [2]
• Updated the LoongArch-specific fontconfig package installation in the Debian 13 cross-compile Dockerfile to use the standard Debian repository and the latest compatible package version.

CI pipeline updates:

• Modified Azure pipeline templates to explicitly use the --platform linux/amd64 flag in Docker build arguments, ensuring consistent architecture targeting in CI builds. [1] [2]

[github-actions]

Triage Summary

Labels will be applied to indicate the affected areas (Build, Compatibility) and the specific operating system (Linux) involved in the issue regarding Docker build scripts and CI configuration.

This issue does not appear to be a regression but rather an enhancement regarding compatibility and build processes.

Additional remarks:

• The issue is focused on CI and Docker build improvements, but relevant labels related to the backend are not applicable.

Detailed Summary and Actions

Summary of the triage:

• The issue relates to updates in Docker build scripts and CI configuration.
• The enhancements aim to improve cross-platform compatibility, specifically for Linux.
• The main areas of focus are related to the build process and cross-architecture support.

Summary of the actions that will be performed:

Action	Item	Description
Apply Label	area/Build	The issue involves updates to Docker build scripts and CI configuration, which relates to the build process.
Apply Label	tenet/compatibility	The issue involves updates to CI configuration that enhance cross-platform builds and architectural compatibility.
Apply Label	os/Linux	The issue is focused on Docker build scripts and CI configurations that specifically target Linux architecture.

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