Add igc driver

[rasapala]

🛠 Summary

JIRA CVS-193959
Installs both intel-igc-cm 66 MB and dependency - libigc2 90MB

🧪 Checklist

• Unit tests added.
• The documentation updated.
• Change follows security best practices.
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[Copilot]

🟡 Changes recommended

The new Intel APT-repo install path introduces non-reproducible builds and needs tightening (version pinning and key/dependency handling) before it can be safely approved.

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Pull request overview

This PR updates the Ubuntu GPU driver installation script to additionally install the Intel IGC CM component (intel-igc-cm) for the 26.18.38308 driver version path by temporarily adding Intel’s GPU APT repository during the build.

Changes:

• Adds Intel GPU APT repo key + repo entry for Ubuntu based on VERSION_CODENAME.
• Installs intel-igc-cm and then removes the repo list entry and purges temporary tooling packages.

File summaries

File	Description
install_ubuntu_gpu_drivers.sh	Adds an APT-repo-based install step for intel-igc-cm in the 26.18.38308 branch.

Review details

Suppressed comments (1)

install_ubuntu_gpu_drivers.sh:110

• Installing intel-igc-cm from a live Intel APT repository without pinning a package version makes the Docker build non-reproducible (the repository contents can change over time, producing different images or breaking builds). Consider switching to an explicit .deb artifact like the other driver branches here, or pin the exact intel-igc-cm version (and optionally the repo snapshot) you expect to use.

	echo "deb [arch=amd64 signed-by=/usr/share/keyrings/intel-graphics.gpg] https://repositories.intel.com/gpu/ubuntu ${VERSION_CODENAME}/lts/2523 unified" \
		> /etc/apt/sources.list.d/intel-gpu-${VERSION_CODENAME}.list && \
	apt-get update && apt-get install -y --no-install-recommends intel-igc-cm && \

• Files reviewed: 1/1 changed files
• Comments generated: 1
• Review effort level: Lite

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