Fix apt-update hook timing for proper package installation

- Renamed hook to 00-apt-update.hook.chroot to run first in chroot stage
- Ensures apt-get update runs before any package installation
- Added proper error handling with exit code checking
- Hook now runs early enough to update package lists before firmware packages
- Prevents 'package not found' errors during ISO build process
- Critical for accessing firmware packages from Devuan and Debian repos

README.md

@@ -101,10 +101,11 @@ This ISO includes comprehensive hardware support with firmware packages for:
 - Wireless network cards
 
 ### Repository Configuration
-- **Primary:** Devuan merged repository (main, contrib, non-free, firmware-nonfree)
+- **Primary:** Devuan merged repository (main, contrib, non-free, non-free-firmware)
 - **Fallback:** Debian testing repository for packages not available in Devuan
-- **Security:** Both Devuan and Debian security updates
-- **Firmware:** Complete firmware-nonfree support
+- **Security:** Debian security updates (Devuan security repos removed)
+- **Firmware:** Complete non-free-firmware support
+- **Auto-Update:** Package lists updated automatically during build
 
 ## Scripts Overview
 
@@ -112,6 +113,7 @@ This ISO includes comprehensive hardware support with firmware packages for:
 - `build.sh` - Main build script with error handling and retry logic
 - `set_root_password.sh` - Set root password for the ISO
 - `insert_openvpn.sh` - Add OpenVPN configuration files
+- `apt-update.hook.chroot` - Automatically updates package lists during build
 
 ### Customization Scripts
 - `customize_iso.sh` - Modify existing ISO (change password, add OpenVPN)
@@ -146,6 +148,7 @@ This ISO includes comprehensive hardware support with firmware packages for:
 - Edit `config/package-lists/live.list.chroot` to add/remove packages
 - Modify `config/preseed/debian-installer.cfg` for installer settings
 - Update hooks in `config/hooks/live/` for additional configurations
+- `apt-update.hook.chroot` - Automatically updates package lists during build
 
 ### Repository Configuration
 - `config/main-config` - Main live-build configuration
@@ -179,4 +182,8 @@ This ISO includes comprehensive hardware support with firmware packages for:
 - OpenVPN config is set to start automatically if provided
 - Root login is enabled by default for SSH access
 - SysVinit is used instead of systemd for compatibility
-- ISO includes comprehensive firmware for 95%+ hardware compatibility
+- ISO includes comprehensive firmware for 95%+ hardware compatibility
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+- Package lists are automatically updated during build process
+- Dual repository system ensures maximum package availability
+- Devuan security repositories removed (Debian security used instead)
+- All firmware components use correct 'non-free-firmware' naming
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config/hooks/live/00-apt-update.hook.chroot

+#!/bin/bash
+# Update package lists before installing packages
+# This ensures the chroot has current package information from all repositories
+# Runs early in the chroot stage, before package installation
+
+echo "Updating package lists in chroot environment..."
+apt-get update
+
+if [ $? -eq 0 ]; then
+    echo "Package lists updated successfully"
+else
+    echo "Warning: Failed to update package lists"
+    exit 1
+fi
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