USE GIT_COMMIT in container builds

[cdesiniotis]

$ regctl image inspect ghcr.io/nvidia/driver:eac3fe8c-570.124.06-ubuntu22.04 --format '{{ jsonPretty .Config.Labels }}'
{
  "com.nvidia.git-commit": "eac3fe8c7c066ebffb41a5592eedfc1dd36d7891",
  "description": "See summary",
  "io.k8s.display-name": "NVIDIA Driver Container",
  "maintainer": "NVIDIA CORPORATION <cudatools@nvidia.com>",
  "name": "NVIDIA Driver Container",
  "org.opencontainers.image.ref.name": "ubuntu",
  "org.opencontainers.image.version": "22.04",
  "release": "N/A",
  "summary": "Provision the NVIDIA driver through containers",
  "vendor": "NVIDIA",
  "version": "570.124.06"
}

[shivakunv]

LGTM

[tariq1890]

I'd classify git-commit under generic metadata similar to name, vendor, version. let's drop the com.nvidia prefix