[debian12] feat: add script

scripts/debian12.sh

@@ -1 +1,79 @@
-echo "> hello ..."
+# update guest
+apt-get update
+DEBIAN_FRONTEND=noninteractive apt-get upgrade -y
+apt-get autoremove -y
+
+# install rc.local script
+cat << 'EOL' | sudo tee /etc/rc.local
+#!/bin/sh -ef
+#
+test -f /etc/ssh/ssh_host_dsa_key || sudo -u root dpkg-reconfigure openssh-server
+exit 0
+EOL
+chmod +x /etc/rc.local
+
+# cleaning logs
+echo '> cleaning logs ...'
+rm -rf /var/log/*
+
+# cleans persistent udev rules
+echo '> cleaning persistent udev rules ...'
+if [ -f /etc/udev/rules.d/70-persistent-net.rules ]; then
+  rm /etc/udev/rules.d/70-persistent-net.rules
+fi
+
+# cleans /tmp directories
+echo '> cleaning /tmp directories ...'
+rm -rf /tmp/*
+rm -rf /var/tmp/*
+
+# cleans SSH keys
+echo '> cleaning ssh host keys ...'
+rm -f /etc/ssh/ssh_host_*
+
+# sets hostname to localhost
+echo '> setting hostname to localhost ...'
+cat /dev/null > /etc/hostname
+hostnamectl set-hostname localhost
+
+# cleans apt.
+echo '> cleaning apt-get ...'
+apt-get clean
+
+# cleans the machine-id
+echo '> cleaning the machine-id ...'
+truncate -s 0 /etc/machine-id
+rm /var/lib/dbus/machine-id
+ln -s /etc/machine-id /var/lib/dbus/machine-id
+
+# install the ansible user
+echo '> create ansible user ...'
+useradd -m ansible
+
+# configure ansible user
+echo '> configure ansible user ...'
+mkdir -p /home/ansible/.ssh
+echo "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIH9H3XK4IaK2pd8xegsbCm0at70kCi33vYkHDccV3Iyn" >> /home/ansible/.ssh/authorized_keys
+chmod 700 /home/ansible/.ssh
+chmod 600 /home/ansible/.ssh/authorized_keys
+chown -R ansible:ansible /home/ansible
+
+# configure sudo for ansible
+echo "ansible ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers.d/ansible
+
+# zero fill the disk
+echo '> zero fill disk ...'
+cat /dev/zero > /zero.file | exit 0 && sync && rm -f /zero.file
+
+# disable root login over ssh
+sed -i 's/PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config
+
+# cleans shell history
+echo '> cleaning shell history ...'
+unset HISTFILE
+history -cw
+echo > ~/.bash_history
+
+# all done
+echo '> done.'
+echo '> packer template build -- complete'