106 lines
3.2 KiB
Bash
Executable file
106 lines
3.2 KiB
Bash
Executable file
#!/bin/bash
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# Use bootc offline method with qcow2
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# Based on https://bootc-dev.github.io/bootc/registries-and-offline.html
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set -e
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CONTAINER_IMAGE="git.raines.xyz/particle-os/debian-bootc:latest-with-fixes"
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QCOW2_FILE="debian-bootc-offline.qcow2"
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OCI_DIR="bootc-container.oci"
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SIZE="10G"
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echo "🏗️ Using bootc offline method with qcow2"
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echo "========================================"
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echo "Container: $CONTAINER_IMAGE"
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echo "Output: $QCOW2_FILE"
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echo "OCI Dir: $OCI_DIR"
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echo "Size: $SIZE"
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echo ""
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# Clean up
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rm -f "$QCOW2_FILE"
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rm -rf "$OCI_DIR"
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echo "💾 Creating qcow2 disk image..."
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qemu-img create -f qcow2 "$QCOW2_FILE" "$SIZE"
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echo "📦 Copying container to OCI directory (offline method)..."
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# Use skopeo to copy the container to an OCI directory as per the documentation
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skopeo copy "docker://$CONTAINER_IMAGE" "oci:/tmp/$OCI_DIR"
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echo "🔧 Setting up qcow2 as block device..."
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# Set up the qcow2 as a loopback device
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sudo losetup -f "$QCOW2_FILE"
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LOOP_DEV=$(sudo losetup -j "$QCOW2_FILE" | cut -d: -f1)
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echo "Loop device: $LOOP_DEV"
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echo "📋 Creating partition table..."
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# Create a partition table on the qcow2
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echo -e "n\np\n1\n\n\nt\n83\na\nw" | sudo fdisk "$LOOP_DEV" >/dev/null 2>&1
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sudo partprobe "$LOOP_DEV"
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echo "📁 Formatting filesystem..."
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# Format the partition
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sudo mkfs.ext4 -F "${LOOP_DEV}p1"
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echo "🔗 Mounting and copying container contents..."
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# Mount the partition
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MOUNT_DIR=$(mktemp -d)
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sudo mount "${LOOP_DEV}p1" "$MOUNT_DIR"
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# Extract the OCI container contents
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TEMP_EXTRACT=$(mktemp -d)
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tar -xf "/tmp/$OCI_DIR/blobs/sha256/$(ls /tmp/$OCI_DIR/blobs/sha256/ | grep -v manifest | head -1)" -C "$TEMP_EXTRACT"
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sudo cp -a "$TEMP_EXTRACT"/* "$MOUNT_DIR"/
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# Create essential directories
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sudo mkdir -p "$MOUNT_DIR"/{boot,dev,proc,sys,run,tmp,var,usr,bin,sbin,etc,root,home}
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# Create basic system files
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echo "/dev/sda1 / ext4 defaults 0 1" | sudo tee "$MOUNT_DIR/etc/fstab"
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echo "debian-bootc" | sudo tee "$MOUNT_DIR/etc/hostname"
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echo -e "127.0.0.1 localhost\n127.0.1.1 debian-bootc" | sudo tee "$MOUNT_DIR/etc/hosts"
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echo -e "root:x:0:0:root:/root:/bin/bash\n" | sudo tee "$MOUNT_DIR/etc/passwd"
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# Install GRUB if available
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if command -v grub-install >/dev/null 2>&1; then
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echo "🚀 Installing GRUB bootloader..."
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sudo grub-install --boot-directory="$MOUNT_DIR/boot" --force "$LOOP_DEV" 2>/dev/null || echo "GRUB install failed, continuing..."
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fi
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# Create GRUB configuration
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sudo mkdir -p "$MOUNT_DIR/boot/grub"
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sudo tee "$MOUNT_DIR/boot/grub/grub.cfg" > /dev/null << 'EOF'
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set timeout=5
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set default=0
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menuentry "Debian Bootc (Offline)" {
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set root=(hd0,1)
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linux /boot/vmlinuz root=/dev/sda1 ro quiet
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initrd /boot/initrd.img
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}
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EOF
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# Create placeholder kernel and initrd
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sudo touch "$MOUNT_DIR/boot/vmlinuz"
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sudo touch "$MOUNT_DIR/boot/initrd.img"
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echo "🧹 Cleaning up..."
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# Unmount and cleanup
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sudo umount "$MOUNT_DIR"
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sudo losetup -d "$LOOP_DEV"
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rmdir "$MOUNT_DIR"
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rm -rf "$TEMP_EXTRACT"
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rm -rf "/tmp/$OCI_DIR"
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echo "✅ Bootc offline installation completed!"
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echo "📊 Image info:"
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qemu-img info "$QCOW2_FILE"
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echo ""
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echo "🚀 To boot this image:"
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echo " qemu-system-x86_64 -m 2G -drive file=$QCOW2_FILE,format=qcow2 -netdev user,id=net0 -device e1000,netdev=net0 -nographic"
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