Add distro/ubuntuCore for UC26 snap and image builds.

Centralize salmanoff snapcraft, dangerous-model image scripts, and QEMU workflow so UC26 can be reproduced from the SMO repo without ubuntu-core-practice. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-06-25 23:01:52 -04:00
parent 44d12eeb9e
commit 038d59f972
17 changed files with 1295 additions and 0 deletions
@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+# Build stock Ubuntu Core 26 amd64 image from Canonical's signed model assertion.
+set -euo pipefail
+
+UC_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+MODEL="${UC_ROOT}/models/ubuntu-core-26-amd64.model"
+WORKDIR="${UC_ROOT}/work/ubuntu-image-snap"
+OUTPUT_DIR="${UC_ROOT}/artifacts/images"
+LOG_DIR="${UC_ROOT}/artifacts/logs"
+
+usage() {
+    cat <<'EOF'
+Usage: build-stock-image.sh [OPTIONS]
+
+Build a stock ubuntu-core-26-amd64 disk image with ubuntu-image snap.
+
+Options:
+  --fresh-workdir   Remove work/ubuntu-image-snap before building (full re-download)
+  --resume          Pass --resume to ubuntu-image (continue partial build)
+  -h, --help        Show this help
+
+Outputs:
+  artifacts/images/pc.img
+  artifacts/images/pc.img.seed.manifest
+  artifacts/logs/build-<timestamp>.log
+
+Host prerequisites:
+  snap install ubuntu-image --classic
+  scripts/fetch-model.sh   (download signed model if missing)
+EOF
+}
+
+fresh_workdir=false
+resume=false
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --fresh-workdir) fresh_workdir=true; shift ;;
+        --resume) resume=true; shift ;;
+        -h|--help) usage; exit 0 ;;
+        *) echo "Unknown option: $1" >&2; usage >&2; exit 1 ;;
+    esac
+done
+
+if [[ ! -f "$MODEL" ]]; then
+    echo "Missing model assertion: $MODEL" >&2
+    echo "Run: scripts/fetch-model.sh" >&2
+    exit 1
+fi
+
+if ! command -v ubuntu-image >/dev/null 2>&1; then
+    echo "ubuntu-image not found. Install with: sudo snap install ubuntu-image --classic" >&2
+    exit 1
+fi
+
+mkdir -p "$OUTPUT_DIR" "$LOG_DIR"
+
+if [[ "$fresh_workdir" == true ]] || [[ "$resume" == false ]]; then
+    if [[ -d "$WORKDIR" ]]; then
+        echo "Removing workdir: $WORKDIR"
+        rm -rf "$WORKDIR"
+    fi
+fi
+mkdir -p "$WORKDIR"
+
+timestamp="$(date +%Y%m%d-%H%M%S)"
+log_file="${LOG_DIR}/build-${timestamp}.log"
+
+cmd=(ubuntu-image snap
+    --workdir "$WORKDIR"
+    --output-dir "$OUTPUT_DIR"
+    --image-size 4G
+    "$MODEL")
+
+if [[ "$resume" == true ]]; then
+    cmd+=(--resume)
+fi
+
+echo "Model:      $MODEL"
+echo "Workdir:    $WORKDIR"
+echo "Output dir: $OUTPUT_DIR"
+echo "Log:        $log_file"
+echo "Running:    ${cmd[*]}"
+
+"${cmd[@]}" 2>&1 | tee "$log_file"
+
+img="${OUTPUT_DIR}/pc.img"
+if [[ ! -f "$img" ]]; then
+    echo "Build finished but $img not found" >&2
+    exit 1
+fi
+
+echo ""
+echo "Done. Image: $img"
+ls -lh "$img" "${img}.seed.manifest" 2>/dev/null || ls -lh "$img"