diff --git a/live_exam_os/Dockerfile b/live_exam_os/Dockerfile
index 158476e2326964a04a13b594428622fe432bd864..dbdbaf0e81d16df596997890649b51a330657179 100644
--- a/live_exam_os/Dockerfile
+++ b/live_exam_os/Dockerfile
@@ -16,7 +16,7 @@ WORKDIR /live-default
 ADD ${config_dir}/packages.list.chroot config/package-lists/
 
 ## Packages to be removed
-ADD ${config_dir}/removepkg.hook.chroot config/hooks/live/
+ADD ${config_dir}/9999-removepkg.hook.chroot config/hooks/live/
 
 ## Add swiss-french keyboard config
 ADD ${config_dir}/keyboard/keyboard config/includes.chroot/etc/default/
diff --git a/live_exam_os/config/9999-removepkg.hook.chroot b/live_exam_os/config/9999-removepkg.hook.chroot
new file mode 100644
index 0000000000000000000000000000000000000000..64645d059394a0f0e05966f8939b66128f3ffddd
--- /dev/null
+++ b/live_exam_os/config/9999-removepkg.hook.chroot
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+apt-get remove -y light-locker nano bluetooth bluez bluez-firmware dosfstools raspi-firmware fdisk dnsmasq-base gdisk fuse3 eject avahi-daemon colord cron apparmor acl dns-root-data fxload gcr gnome-icon-theme gnome-keyring gnome-keyring-pkcs11 gnome-themes-extra gnome-themes-extra-data gnupg gnupg-utils gnupg-l10n gpg gpg-agent gpg-wks-client gpg-wks-server gpgconf gpgsm ifupdown indi-dsi iputils-ping ixo-usb-jtag less mobile-broadband-provider-info modemmanager ntfs-3g parted pinentry-curses pinentry-gnome3 pkexec policykit-1 poppler-data ppp publicsuffix rsync rtkit sane-airscan sane-utils pavucontrol sound-theme-freedesktop uuid-runtime vim-common vim-tiny whiptail xbitmaps xcvt xiccd iw
+
+apt-get clean -y
+apt-get autopurge -y
+
+# Remove all packages marked as "rc", i.e. all packages deleted
+# from the system but for which configuration files are still present
+for i in `dpkg -l|grep ^rc|awk {'print $2'}`;do dpkg --force-all -P $i;done
+
+rm -rf /var/lib/apt/lists/*
diff --git a/live_exam_os/config/packages.list.chroot b/live_exam_os/config/packages.list.chroot
index 919b6f9538f1ddf1ff5247b3b248c38a9c3d531c..ac2514052572b936fd84acb0df1b166eb491f973 100644
--- a/live_exam_os/config/packages.list.chroot
+++ b/live_exam_os/config/packages.list.chroot
@@ -1,11 +1,8 @@
 task-laptop
-task-french
-task-french-desktop
 xfce4
 xfce4-terminal
 xfce4-power-manager
 xfce4-battery-plugin
-ca-certificates
 ufw
 virt-viewer
 firmware-iwlwifi
diff --git a/live_exam_os/config/removepkg.hook.chroot b/live_exam_os/config/removepkg.hook.chroot
deleted file mode 100644
index 769cb216bba38d9979db343eabd85be19ddfae0d..0000000000000000000000000000000000000000
--- a/live_exam_os/config/removepkg.hook.chroot
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/sh
-
-apt-get remove -y light-locker libreoffice-common libreoffice-core firefox-esr firefox-esr-l10n-fr nano vim aspell aspell-fr bluetooth bluez bluez-firmware dosfstools raspi-firmware fdisk
-
-# Remove all packages marked as "rc", i.e. all packages deleted
-# from the system but for which configuration files are still present
-for i in `dpkg -l|grep ^rc|awk {'print $2'}`;do dpkg --force-all -P $i;done