archlinux min install for private use

bootstrap.sh

#!/usr/bin/env bash
set -eo pipefail

# create swap and linux partitions and set bootable flag
sfdisk /dev/vda <<EOF
label: dos
, 1G, swap
,, linux, *
EOF

# format partitions
mkswap -L swap /dev/vda1
mkfs.ext4 -L linux /dev/vda2

# use/mount partitions
swapon /dev/vda1
mount /dev/vda2 /mnt

# grab fastest mirrors
reflector -c GB -f 2 -p https \
	--save /etc/pacman.d/mirrorlist

# install basic packages
pacstrap /mnt \
	base base-devel \
	linux linux-firmware \
	devtools dhcpcd syslinux \
	vim || true

# generate fstab with uuids
genfstab -U /mnt | tee -a /mnt/etc/fstab

# replace image mirrorlist
cp -vf /etc/pacman.d/mirrorlist /mnt/etc/pacman.d/mirrorlist

# into chroot:
arch-chroot /mnt

# basic config
locale-gen
echo 'LANG=en_GB.UTF-8' > /etc/locale.conf
echo 'archlinux' > /etc/hostname
ln -sf /usr/share/zoneinfo/Europe/London /etc/localtime

# dev user
groupadd -r -g 10 sudo
useradd -m -u 1000 -g users -G sudo dev
passwd -d dev

# enable sudo
sed -i.old -E 's!(#.)?%sudo(.*)ALL!%sudo\2NOPASSWD:ALL!gi' /etc/sudoers

# enable network
systemctl enable dhcpcd

# create a new initramfs
mkinitcpio -P

# fix bootloader drive
sed -i.old -E \
	-e 's:/dev/sda3:/dev/vda2 console=ttyS0:' \
	-e 's:(TIMEOUT ).*$:\110:' \
	/boot/syslinux/syslinux.cfg

# leave chroot
exit

# install bootloader
syslinux-install_update -ami -c /mnt

# finish
reboot