diff --git a/build_script/freifunk_root.sh b/build_script/freifunk_root.sh
new file mode 100755
index 0000000000000000000000000000000000000000..3ac52d51e7a4828987c1362df588f01c3c4b74f9
--- /dev/null
+++ b/build_script/freifunk_root.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+# Installing QoL packages and then (after build-essential incl.) dependencies
+apt update && apt install -y htop tmux vim sudo mosh build-essential git python3 python-is-python3 python3-distutils ecdsautils gawk unzip libncurses5-dev zlib1g-dev libssl-dev libelf-dev wget rsync time qemu-utils
+
+# Create `user` user with `sudo` group
+useradd -ms /bin/bash -G sudo user
+# `sudo` group w/o password
+sed -i /etc/sudoers -re 's/^%sudo.*/%sudo ALL=(ALL:ALL) NOPASSWD: ALL/g'
+
+mkdir -v /home/user/.ssh
+# my public key
+echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOLFCOqpPOTZEQiWcY9TyVQnMoc5bCYlxLaRKhiB/uxo xbr 2024-06-16" >> /home/user/.ssh/authorized_keys
+# projects.c3l.lu public key
+echo "|1|X2M4bHKf8E+plhJ6KoDZzCfw5LI=|EpHLDWOmOq4SLelYTGd8SH+7hvU= ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIXfRmGmfbxPoErs5lpTnz+PZRQdh0QvPGTiswxFkXOx" >> /home/user/.ssh/known_hosts
+chown -vR user:user /home/user/.ssh
+chmod -v 700 /home/user/.ssh
+chmod -v 600 /home/user/.ssh/*
+chmod -v 644 /home/user/.ssh/known_hosts
+# make a key to have access to projects.c3l.lu
+sudo -u user ssh-keygen -t ed25519 -N '' -C 'freifunk-hetzner-builder' -f /home/user/.ssh/id_ed25519 <<<n
+echo ""
+echo "The ssh key is the following: "
+cat /home/user/.ssh/id_ed25519.pub