Fix Linux CPU build: add spirv-headers dependency

[ilopezluna]

The build_native_linux_cpu job is failing with:

fatal error: spirv/unified1/spirv.hpp: No such file or directory

This is caused by llama.cpp PR #21572 which added a dependency on spirv-headers for the Vulkan backend. The llama.cpp CI was already updated in PR #22109 to install this package.

This PR adds spirv-headers to install-vulkan.sh to fix the build.

Fixes: https://github.com/docker/inference-engine-llama.cpp/actions/runs/24664691885/job/72119213249

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[gemini-code-assist]

Code Review

This pull request updates the Vulkan installation script to include the spirv-headers package. The review feedback recommends improving the reliability and efficiency of the installation process by adding a package index update and cleaning up the apt cache, which ensures consistent builds and reduces the final image size.

[gemini-code-assist]

Running apt-get install without a preceding apt-get update in the same execution block can lead to build failures in Docker environments if the package index is stale. Additionally, cleaning up /var/lib/apt/lists/* is best practice to maintain consistency with other scripts in the repository (such as scripts/apt-install.sh) and to minimize the footprint of the build layer.

Suggested change

	apt-get install -y glslc libvulkan-dev spirv-headers
	apt-get update
	apt-get install -y glslc libvulkan-dev spirv-headers
	rm -rf /var/lib/apt/lists/*

References

1. The repository style guide prioritizes correctness and maintainability. Ensuring a reliable build process by updating package indexes and cleaning up is essential for these goals. ^(link)