Minimal raspbian config for Raspberry Pi 2

config.txt

# Disables non core units, disables swap, creates new user, updates system

systemctl disable bluetooth.service
systemctl disable rpi-display-backlight.service
systemctl disable rpi-eeprom-update.service
systemctl disable wpa_supplicant.service
systemctl disable avahi-daemon.socket
systemctl disable avahi-daemon.service
systemctl disable dbus-org.freedesktop.Avahi.service
systemctl disable dbus-org.freedesktop.timesync1.service
systemctl disable keyboard-setup.service
systemctl disable hciuart.service
systemctl disable nfs-client.target
systemctl disable remote-fs.target
systemctl disable apt-daily-upgrade.timer
systemctl disable apt-daily.timer
systemctl disable raspberrypi-net-mods.service
dphys-swapfile swapoff
dphys-swapfile uninstall
sudo useradd -m -d /home/$NEWUSER $NEWUSER
usermod -G sudo $NEWUSER
apt update
apt upgrade
reboot