ISO builder: native Ubuntu version, no Docker needed
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Jino Jose
parent
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commit
8a350b4d86
@ -1,70 +1,44 @@
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#!/usr/bin/env bash
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# ─────────────────────────────────────────────────────────────
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# Cezen AI Suite — Custom ISO Builder
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# Runs on macOS using Docker. Produces a bootable USB image.
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# Runs directly on Ubuntu 22.04 (run on the server)
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#
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# Usage: bash autoinstall/build-iso.sh
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# Output: autoinstall/cezen-ai-ubuntu2204.iso
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# Usage:
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# cd ~/aipackage
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# bash autoinstall/build-iso.sh
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#
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# Requirements:
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# - Docker Desktop running on your MacBook
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# - ~6 GB free disk space (ISO download + work)
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# Output: ~/aipackage/autoinstall/cezen-ai-ubuntu2204.iso
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# Then copy the ISO to a USB stick or burn it.
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# ─────────────────────────────────────────────────────────────
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set -e
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
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WORK_DIR="/tmp/cezen-iso-work"
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ORIGINAL_ISO="/tmp/ubuntu-22.04.5-live-server-amd64.iso"
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OUTPUT_ISO="$SCRIPT_DIR/cezen-ai-ubuntu2204.iso"
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UBUNTU_ISO_URL="https://releases.ubuntu.com/22.04.5/ubuntu-22.04.5-live-server-amd64.iso"
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UBUNTU_URL="https://releases.ubuntu.com/22.04.5/ubuntu-22.04.5-live-server-amd64.iso"
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echo "╔══════════════════════════════════════════╗"
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echo "║ Cezen AI — ISO Builder ║"
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echo "╚══════════════════════════════════════════╝"
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echo ""
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# Check Docker is running
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if ! docker info &>/dev/null; then
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echo "ERROR: Docker is not running. Start Docker Desktop and try again."
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exit 1
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fi
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echo "✓ Docker is running"
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# Check autoinstall files exist
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if [ ! -f "$SCRIPT_DIR/user-data" ] || [ ! -f "$SCRIPT_DIR/meta-data" ]; then
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echo "ERROR: user-data or meta-data not found in $SCRIPT_DIR"
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exit 1
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fi
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echo "✓ Autoinstall files found"
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echo ""
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echo "→ Building ISO inside Docker container (Ubuntu 22.04)..."
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echo " This will take 5–15 minutes depending on internet speed."
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echo ""
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docker run --rm \
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-v "$SCRIPT_DIR:/autoinstall" \
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-v "$REPO_ROOT:/repo" \
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ubuntu:22.04 \
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bash -c '
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set -e
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# Install tools
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export DEBIAN_FRONTEND=noninteractive
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# ── Install build tools ────────────────────────
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echo "→ Installing build tools..."
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apt-get update -qq
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apt-get install -y -qq xorriso wget isolinux rsync
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apt-get install -y -qq xorriso wget isolinux
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echo "✓ Tools ready"
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WORK_DIR="/tmp/iso-work"
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ORIGINAL_ISO="/tmp/ubuntu-22.04.5-live-server-amd64.iso"
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UBUNTU_URL="https://releases.ubuntu.com/22.04.5/ubuntu-22.04.5-live-server-amd64.iso"
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# Download Ubuntu ISO if not already cached
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if [ ! -f "$ORIGINAL_ISO" ]; then
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# ── Download Ubuntu ISO ────────────────────────
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if [ -f "$ORIGINAL_ISO" ]; then
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echo "✓ Ubuntu ISO already downloaded"
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else
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echo "→ Downloading Ubuntu 22.04.5 Server ISO (~1.8 GB)..."
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wget -q --show-progress -O "$ORIGINAL_ISO" "$UBUNTU_URL"
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wget --show-progress -O "$ORIGINAL_ISO" "$UBUNTU_URL"
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echo "✓ Downloaded"
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fi
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echo "✓ Ubuntu ISO ready"
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# Extract ISO contents
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# ── Extract ISO ────────────────────────────────
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echo "→ Extracting ISO..."
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rm -rf "$WORK_DIR"
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mkdir -p "$WORK_DIR"
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@ -72,47 +46,46 @@ xorriso -osirrox on \
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-indev "$ORIGINAL_ISO" \
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-extract / "$WORK_DIR" 2>/dev/null
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chmod -R u+w "$WORK_DIR"
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echo "✓ ISO extracted"
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echo "✓ Extracted"
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# Inject autoinstall files
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# ── Inject autoinstall files ───────────────────
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echo "→ Injecting autoinstall config..."
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mkdir -p "$WORK_DIR/nocloud"
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cp /autoinstall/user-data "$WORK_DIR/nocloud/user-data"
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cp /autoinstall/meta-data "$WORK_DIR/nocloud/meta-data"
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cp "$SCRIPT_DIR/user-data" "$WORK_DIR/nocloud/user-data"
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cp "$SCRIPT_DIR/meta-data" "$WORK_DIR/nocloud/meta-data"
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echo "✓ user-data and meta-data injected"
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# Modify GRUB to auto-select install with autoinstall
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# ── Patch GRUB ────────────────────────────────
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echo "→ Patching GRUB config..."
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GRUB_CFG="$WORK_DIR/boot/grub/grub.cfg"
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# Backup original
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cp "$GRUB_CFG" "$GRUB_CFG.orig"
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# Set default to first entry and zero timeout
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# Set 5 second countdown then auto-install
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sed -i "s/set timeout=.*/set timeout=5/" "$GRUB_CFG"
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sed -i "s/set timeout_style=.*/set timeout_style=countdown/" "$GRUB_CFG"
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# Add autoinstall + nocloud parameters to the first linux line
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# This patches the "Install Ubuntu Server" entry
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# Add autoinstall params to the first linux kernel line
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sed -i "/^\s*linux.*vmlinuz/s/$/ autoinstall quiet ds=nocloud;s=\/cdrom\/nocloud\//" "$GRUB_CFG"
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echo "✓ GRUB patched"
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echo "✓ GRUB config patched"
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# Get original ISO metadata for repacking
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# ── Get EFI partition info for repacking ───────
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MBR_TEMPLATE=$(mktemp)
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dd if="$ORIGINAL_ISO" bs=1 count=432 of="$MBR_TEMPLATE" 2>/dev/null
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# Get EFI partition info
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EFI_START=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI" | awk "{print \$2}")
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EFI_SIZE=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI" | awk "{print \$4}")
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EFI_START=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI" | awk '{print $2}')
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EFI_SIZE=$(fdisk -l "$ORIGINAL_ISO" 2>/dev/null | grep "EFI" | awk '{print $4}')
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echo "→ Repacking ISO..."
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# ── Repack ISO ─────────────────────────────────
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echo "→ Repacking ISO (this takes ~2 minutes)..."
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xorriso -as mkisofs \
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-r \
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-V "Cezen_AI_Ubuntu2204" \
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-o /autoinstall/cezen-ai-ubuntu2204.iso \
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-o "$OUTPUT_ISO" \
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--grub2-mbr "$MBR_TEMPLATE" \
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-partition_offset 16 \
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--mbr-force-bootable \
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-append_partition 2 28732ac11ff8d211ba4b00a0c93ec93b "$WORK_DIR/boot/grub/efi.img" \
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-append_partition 2 28732ac11ff8d211ba4b00a0c93ec93b \
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"$WORK_DIR/boot/grub/efi.img" \
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-appended_part_as_gpt \
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-iso_mbr_part_type a2a0d0ebe5b9334487c068b6b72699c7 \
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-c "/boot.catalog" \
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@ -127,18 +100,17 @@ xorriso -as mkisofs \
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-boot-load-size 4 \
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"$WORK_DIR" 2>/dev/null
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echo "✓ ISO built successfully"
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ls -lh /autoinstall/cezen-ai-ubuntu2204.iso
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'
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echo ""
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echo "╔══════════════════════════════════════════════════════╗"
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echo "║ ISO built: autoinstall/cezen-ai-ubuntu2204.iso ║"
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echo "║ ║"
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echo "║ Flash to USB: ║"
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echo "║ sudo dd if=autoinstall/cezen-ai-ubuntu2204.iso \ ║"
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echo "║ of=/dev/diskX bs=4m status=progress ║"
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echo "║ (replace /dev/diskX with your USB drive) ║"
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echo "║ Done! ║"
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echo "╚══════════════════════════════════════════════════════╝"
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echo ""
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echo "→ To find your USB drive: diskutil list"
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ls -lh "$OUTPUT_ISO"
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echo ""
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echo "→ Copy to your MacBook:"
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echo " scp user@172.16.10.180:~/aipackage/autoinstall/cezen-ai-ubuntu2204.iso ."
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echo ""
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echo "→ Flash to USB on MacBook:"
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echo " diskutil list # find USB e.g. /dev/disk4"
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echo " diskutil unmountDisk /dev/disk4"
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echo " sudo dd if=cezen-ai-ubuntu2204.iso of=/dev/disk4 bs=4m status=progress"
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