diff --git a/common.d/common.deb.sh b/common.d/common.deb.sh
new file mode 100644
index 0000000..992baea
--- /dev/null
+++ b/common.d/common.deb.sh
@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+source ./common.d/functions.sh
+source ./common.d/build_functions.sh
+
+require "debootstarp"
+
+export DEBIAN_FRONTEND=noninteractive
+
+fetch_base_system()
+{
+    local rootdir="$1"
+    local branch="$2"
+    local components="$3"
+    local repo="$4"
+    local debootstrap_flags="$5"
+
+    [ ! -d "$rootdir" ] && {
+        log "Rootdir [$rootdir] does not exists" ierror
+        return 2
+    }
+    log "Fetching base system" internal
+    debootstarp --arch arm64 --components "$components" "$branch" "$rootdir" "$repo" || {
+        log "Failed to fetch base system" ierror
+    }
+}
+
+prepare_system()
+{
+    local rootdir="$1"
+    [ ! -d "$rootdir" ] && {
+        log "Rootdir [$rootdir] does not exists" ierror
+        return 2
+    }
+    
+    log "Refrashing apt repos" internal
+    chroot "$rootdir" apt update || {
+        log "Failed to refresh apt repos" ierror
+        return 1
+    }
+
+    log "Updating system" internal
+    chroot "$rootdir" apt upgrade -y || {
+        log "Failed to update system" ierror
+        return 1
+    }
+}
+
+setup_zram_generator()
+{
+    local rootdir="$1"
+    [ ! -d "$rootdir" ] && {
+        log "Rootdir [$rootdir] does not exists" ierror
+        return 2
+    }
+    
+    log "Installing systemd-zram-generator" install
+    chroot "$rootdir" apt install systemd-zram-generator -y || {
+        log "Failed to install systemd-zram-generator" ierror
+        return 1
+    }
+
+    log "Configuring zram-generator" internal
+    cp ./drop/zram-generator.conf "$rootdir/etc/systemd/zram-generator.conf" || {
+        log "Failed to confugire zram-generator" ierror
+        return 1
+    }
+    
+    log "Enabling zram-generator" internal
+    chroot "$rootdir" systemctl enable systemd-zram-setup@zram0.service || {
+        log "Failed to enable zram-generator" ierror
+        return 1
+    }
+}
+
+install_nabu_packages()
+{
+    local rootdir="$1"
+    [ ! -d "$rootdir" ] && {
+        log "Rootdir [$rootdir] does not exists" ierror
+        return 2
+    }
+    
+    cp ./packages/*.deb "$rootdir/opt/"
+    chroot "$rootdir" bash -c "dpkg -i /opt/*.deb" {
+        log "Failed to install packages" ierror
+        return 1
+    }
+    chroot "$rootdir" bash -c "rm /opt/*.deb"
+
+    log "Enabling userspace services" internal
+    chroot "$rootdir" systemctl enable qrtr-ns pd-mapper tqftpserv rmtfs || {
+        log "Failed to enable services" ierror
+        return 1
+    }
+}
+
+install_packages()
+{
+    local rootdir="$1"
+    local packages="${@:2}"
+    [ ! -d "$rootdir" ] && {
+        log "Rootdir [$rootdir] does not exists" ierror
+        return 2
+    }
+
+    chroot "$rootdir" apt install ${packages[*]} -y || {
+        log "Failed to install package(s)" ierror
+        return 1
+    }
+}
+
+finish_system()
+{
+    local rootdir="$1"
+    [ ! -d "$rootdir" ] && {
+        log "Rootdir [$rootdir] does not exists" ierror
+        return 2
+    }
+    
+    log "Cleaning apt cache" internal
+    chroot "$rootdir" apt clean || {
+        log "Failed to clean apt cache" ierror
+        return 1
+    }
+    
+    log "Updating runtime linked bindings" internal
+    chroot "$rootdir" ldconfig || {
+        log "Failed to update runtime linker bindings" ierror
+        return 1
+    }
+}
+