Add weekly forward compatibility testing

.github/scripts/generate-values-overrides.sh

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+#!/usr/bin/env bash
+
+# Copyright 2024 NVIDIA CORPORATION
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -euo pipefail
+
+# Usage: generate-values-overrides.sh OUTPUT_FILE TOOLKIT_IMAGE DEVICE_PLUGIN_IMAGE MIG_MANAGER_IMAGE
+#
+# Generates a Helm values override file for GPU Operator component images.
+# This file can be used with `helm install -f values-overrides.yaml` to
+# override default component image versions.
+
+if [[ $# -ne 4 ]]; then
+    echo "Usage: $0 OUTPUT_FILE TOOLKIT_IMAGE DEVICE_PLUGIN_IMAGE MIG_MANAGER_IMAGE" >&2
+    echo "" >&2
+    echo "Example:" >&2
+    echo "  $0 values.yaml \\" >&2
+    echo "    ghcr.io/nvidia/container-toolkit:v1.18.0-ubuntu20.04 \\" >&2
+    echo "    ghcr.io/nvidia/k8s-device-plugin:v0.17.0-ubi8 \\" >&2
+    echo "    ghcr.io/nvidia/k8s-mig-manager:v0.10.0-ubuntu20.04" >&2
+    exit 1
+fi
+
+OUTPUT_FILE="$1"
+TOOLKIT_IMAGE="$2"
+DEVICE_PLUGIN_IMAGE="$3"
+MIG_MANAGER_IMAGE="$4"
+
+# Generate values override file
+cat > "${OUTPUT_FILE}" <<EOF
+# Generated by generate-values-overrides.sh
+# Date: $(date -u +"%Y-%m-%d %H:%M:%S UTC")
+#
+# This file overrides default GPU Operator component images with
+# specific versions for forward compatibility testing.
+
+toolkit:
+  repository: ""
+  version: ""
+  image: "${TOOLKIT_IMAGE}"
+
+devicePlugin:
+  repository: ""
+  version: ""
+  image: "${DEVICE_PLUGIN_IMAGE}"
+
+migManager:
+  repository: ""
+  version: ""
+  image: "${MIG_MANAGER_IMAGE}"
+EOF
+
+echo "Generated values override file: ${OUTPUT_FILE}"
+echo ""
+echo "=== Component Images ==="
+echo "Container Toolkit:  ${TOOLKIT_IMAGE}"
+echo "Device Plugin:      ${DEVICE_PLUGIN_IMAGE}"
+echo "MIG Manager:        ${MIG_MANAGER_IMAGE}"
+echo ""
+echo "=== File Contents ==="
+cat "${OUTPUT_FILE}"
+

.github/scripts/get-latest-images.sh

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+#!/bin/bash
+# Copyright NVIDIA CORPORATION
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -euo pipefail
+
+COMPONENT=${1:-}
+
+if [[ -z "${COMPONENT}" ]]; then
+    echo "Usage: $0 <toolkit|device-plugin|mig-manager>" >&2
+    exit 1
+fi
+
+# Verify regctl is available
+if ! command -v regctl &> /dev/null; then
+    echo "Error: regctl not found. Please install regctl first." >&2
+    exit 1
+fi
+
+# Map component names to GHCR image repositories and GitHub source repositories
+case "${COMPONENT}" in
+    toolkit)
+        IMAGE_REPO="ghcr.io/nvidia/container-toolkit"
+        GITHUB_REPO="NVIDIA/container-toolkit"
+        ;;
+    device-plugin)
+        IMAGE_REPO="ghcr.io/nvidia/k8s-device-plugin"
+        GITHUB_REPO="NVIDIA/k8s-device-plugin"
+        ;;
+    mig-manager)
+        IMAGE_REPO="ghcr.io/nvidia/k8s-mig-manager"
+        GITHUB_REPO="NVIDIA/k8s-mig-manager"
+        ;;
+    *)
+        echo "Error: Unknown component '${COMPONENT}'" >&2
+        echo "Valid components: toolkit, device-plugin, mig-manager" >&2
+        exit 1
+        ;;
+esac
+
+echo "Fetching latest commit from ${GITHUB_REPO}..." >&2
+
+# Get the latest commit SHA from the main branch using GitHub API
+GITHUB_API_URL="https://api.github.com/repos/${GITHUB_REPO}/commits/main"
+
+# Use GITHUB_TOKEN if available for authentication (higher rate limits)
+if [[ -n "${GITHUB_TOKEN:-}" ]]; then
+    LATEST_COMMIT=$(curl -sSL \
+        -H "Authorization: Bearer ${GITHUB_TOKEN}" \
+        -H "Accept: application/vnd.github.v3+json" \
+        "${GITHUB_API_URL}" | \
+        jq -r '.sha[0:8]')
+else
+    LATEST_COMMIT=$(curl -sSL \
+        -H "Accept: application/vnd.github.v3+json" \
+        "${GITHUB_API_URL}" | \
+        jq -r '.sha[0:8]')
+fi
+
+if [[ -z "${LATEST_COMMIT}" || "${LATEST_COMMIT}" == "null" ]]; then
+    echo "Error: Failed to fetch latest commit from ${GITHUB_REPO}" >&2
+    exit 1
+fi
+
+echo "Latest commit SHA: ${LATEST_COMMIT}" >&2
+
+# Construct full image path with commit tag
+FULL_IMAGE="${IMAGE_REPO}:${LATEST_COMMIT}"
+
+echo "Verifying image exists: ${FULL_IMAGE}" >&2
+
+# Verify the image exists using regctl
+if ! regctl manifest head "${FULL_IMAGE}" &> /dev/null; then
+    echo "Error: Image ${FULL_IMAGE} does not exist or is not accessible" >&2
+    echo "The image may not have been built yet for commit ${LATEST_COMMIT}" >&2
+    exit 1
+fi
+
+echo "Verified ${COMPONENT} image: ${FULL_IMAGE}" >&2
+echo "${FULL_IMAGE}"