diff --git a/configs/ubuntu/noble_gnome.json b/configs/ubuntu/noble_gnome.json
index 1ba765a..cdfeb3d 100644
--- a/configs/ubuntu/noble_gnome.json
+++ b/configs/ubuntu/noble_gnome.json
@@ -4,6 +4,7 @@
     "download_link": "https://cdimage.ubuntu.com/ubuntu-base/noble/daily/current/noble-base-amd64.tar.gz",
     "download_name": "noble-base-amd64.tar.gz",
     "repositories": [],
+    "replace_repositories": "False",
     "packages": "grub-pc linux-image-generic ubuntu-desktop",
     "scripts": [
         "configs/scripts/install.sh",
diff --git a/configs/ubuntu/noble_kde.json b/configs/ubuntu/noble_kde.json
index 7bed4b8..bb355aa 100644
--- a/configs/ubuntu/noble_kde.json
+++ b/configs/ubuntu/noble_kde.json
@@ -4,6 +4,7 @@
     "download_link": "https://cdimage.ubuntu.com/ubuntu-base/noble/daily/current/noble-base-amd64.tar.gz",
     "download_name": "noble-base-amd64.tar.gz",
     "repositories": [],
+    "replace_repositories": "False",
     "packages": "grub-pc linux-image-generic kubuntu-desktop",
     "scripts": [
         "configs/scripts/install.sh",
diff --git a/configs/ubuntu/noble_lxqt.json b/configs/ubuntu/noble_lxqt.json
index f5f1325..649ae12 100644
--- a/configs/ubuntu/noble_lxqt.json
+++ b/configs/ubuntu/noble_lxqt.json
@@ -4,6 +4,7 @@
     "download_link": "https://cdimage.ubuntu.com/ubuntu-base/noble/daily/current/noble-base-amd64.tar.gz",
     "download_name": "noble-base-amd64.tar.gz",
     "repositories": [],
+    "replace_repositories": "False",
     "packages": "grub-pc linux-image-generic lubuntu-desktop",
     "scripts": [
         "configs/scripts/install.sh",
diff --git a/configs/ubuntu/noble_mate.json b/configs/ubuntu/noble_mate.json
index bfdfdb6..32d5b69 100644
--- a/configs/ubuntu/noble_mate.json
+++ b/configs/ubuntu/noble_mate.json
@@ -4,6 +4,7 @@
     "download_link": "https://cdimage.ubuntu.com/ubuntu-base/noble/daily/current/noble-base-amd64.tar.gz",
     "download_name": "noble-base-amd64.tar.gz",
     "repositories": [],
+    "replace_repositories": "False",
     "packages": "grub-pc linux-image-generic ubuntu-mate-desktop",
     "scripts": [
         "configs/scripts/install.sh",
diff --git a/configs/ubuntu/noble_server.json b/configs/ubuntu/noble_server.json
index 915a921..eb85d68 100644
--- a/configs/ubuntu/noble_server.json
+++ b/configs/ubuntu/noble_server.json
@@ -4,6 +4,7 @@
     "download_link": "https://cdimage.ubuntu.com/ubuntu-base/noble/daily/current/noble-base-amd64.tar.gz",
     "download_name": "noble-base-amd64.tar.gz",
     "repositories": [],
+    "replace_repositories": "False",
     "packages": "nginx grub-pc linux-image-generic",
     "scripts": [
         "configs/scripts/install.sh",
diff --git a/main.py b/main.py
index 5d3ef45..3b7ceed 100755
--- a/main.py
+++ b/main.py
@@ -58,7 +58,7 @@ def rootfs_creator(filename):
 
 
 # packaging rootfs
-def rootfs_package(identifier, scripts):
+def rootfs_package(identifier, scripts, extra_files):
     infile = f"{identifier}.tar.gz"
     outfile = f"{identifier}.iso"
 
@@ -95,6 +95,9 @@ def rootfs_package(identifier, scripts):
         command(f"echo './{result}' | sudo tee -a '{chroot}/root/.profile'")
         command(f"echo './{result}' | sudo tee -a '{chroot}/root/.bashrc'")
 
+    for extra_file in extra_files:
+        command(f"sudo cp '{extra_file}' '{chroot}'")
+
     command(f"echo 'umount -R /mnt' | sudo tee -a '{chroot}/root/.profile'")
     command(f"echo 'umount -R /mnt' | sudo tee -a '{chroot}/root/.bashrc'")
     command(f"echo 'reboot' | sudo tee -a '{chroot}/root/.profile'")
@@ -109,31 +112,83 @@ def rootfs_package(identifier, scripts):
 
 
 # distro specific
-def ubuntu_rootfs_prepare(
-    download_link, download_name, packages, identifier, scripts, package_manager
+def download_rootfs_prepare(
+    download_link,
+    download_name,
+    packages,
+    repositories,
+    replace_repositories,
+    keyrings,
+    identifier,
+    scripts,
+    package_manager,
+    extra_files,
 ):
     rootfs_downloader(download_link, download_name)
-    generic_rootfs_prepare(packages, identifier, scripts, package_manager)
+    apt_rootfs_prepare(
+        repositories, replace_repositories, packages, identifier, scripts, extra_files
+    )
 
 
-def debian_rootfs_prepare(
-    download_link, download_name, packages, identifier, scripts, package_manager
+def debootstrap_rootfs_prepare(
+    download_link,
+    download_name,
+    packages,
+    repositories,
+    replace_repositories,
+    keyrings,
+    identifier,
+    scripts,
+    package_manager,
+    extra_files,
 ):
     command(f"sudo debootstrap --arch amd64 {download_name} {chroot} {download_link}")
-    generic_rootfs_prepare(packages, identifier, scripts, package_manager)
+    apt_rootfs_prepare(
+        repositories,
+        replace_repositories,
+        keyrings,
+        packages,
+        identifier,
+        scripts,
+        extra_files,
+    )
 
 
-def generic_rootfs_prepare(packages, identifier, scripts, package_manager):
+def apt_rootfs_prepare(
+    repositories,
+    replace_repositories,
+    keyrings,
+    packages,
+    identifier,
+    scripts,
+    extra_files,
+):
     prepare_chroot()
+
+    if replace_repositories:
+        overwritten = False
+    else:
+        overwritten = True
+
+    for repository in repositories:
+        if overwritten:
+            do_chroot_command(f"echo '{repository}' >>/etc/apt/sources.list")
+        else:
+            do_chroot_command(f"echo '{repository}' >/etc/apt/sources.list")
+            overwritten + True
+
+    for download, name in keyrings:
+        do_chroot_command(f"wget {download}")
+        do_chroot_command(f"dpkg -i {name}")
+        do_chroot_command(f"rm {name}")
+
     do_chroot_command("apt update -y")
     do_chroot_command("apt full-upgrade -y")
-    do_chroot_command(
-        f"DEBIAN_FRONTEND=noninteractive {package_manager} install -y {packages}"
-    )
+    do_chroot_command(f"DEBIAN_FRONTEND=noninteractive apt install -y {packages}")
     do_chroot_command("echo 'localmachine' > /etc/hostname")
     close_chroot()
     rootfs_creator(f"{identifier}.tar.gz")
-    rootfs_package(f"{output}{identifier}", scripts)
+    rootfs_package(f"{output}{identifier}", scripts, extra_files)
 
 
 # main
@@ -182,28 +237,40 @@ def main():
                 download_link = data["download_link"]
                 download_name = data["download_name"]
                 packages = data["packages"]
+                repositories = data["repositories"]
+                replace_repositories = bool(data["replace_repositories"])
+                keyrings = data["keyrings"]
                 identifier = data["identifier"]
                 scripts = data["scripts"]
                 package_manager = data["package_manager"]
+                extra_files = data["extra_files"]
 
                 match rootfs_type:
                     case "download":
-                        ubuntu_rootfs_prepare(
+                        download_rootfs_prepare(
                             download_link,
                             download_name,
                             packages,
+                            repositories,
+                            replace_repositories,
+                            keyrings,
                             identifier,
                             scripts,
                             package_manager,
+                            extra_files,
                         )
                     case "debootstrap":
-                        debian_rootfs_prepare(
+                        debootstrap_rootfs_prepare(
                             download_link,
                             download_name,
                             packages,
+                            repositories,
+                            replace_repositories,
+                            keyrings,
                             identifier,
                             scripts,
                             package_manager,
+                            extra_files,
                         )
 
     close_chroot()