ProxmoxVE-HelperScripts/setup/pihole_setup.sh

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#!/usr/bin/env bash
set -o errexit
set -o errtrace
set -o nounset
set -o pipefail
shopt -s expand_aliases
alias die='EXIT=$? LINE=$LINENO error_exit'
trap die ERR
trap 'die "Script interrupted."' INT
function error_exit() {
trap - ERR
local DEFAULT='Unknown failure occured.'
local REASON="\e[97m${1:-$DEFAULT}\e[39m"
local FLAG="\e[91m[ERROR:LXC] \e[93m$EXIT@$LINE"
msg "$FLAG $REASON"
exit $EXIT
}
function msg() {
local TEXT="$1"
echo -e "$TEXT"
}
msg "Setting up LXC OS..."
sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
locale-gen >/dev/null
# Update container OS
msg "Updating container OS..."
apt update &>/dev/null
apt-get -qqy upgrade &>/dev/null
msg "Installing Prerequisites..."
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apt-get -y install \
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curl \
sudo &>/dev/null
msg "Installing Pi-hole.."
curl -sSL https://install.pi-hole.net | bash
msg "Customizing LXC..."
rm /etc/motd
rm /etc/update-motd.d/10-uname
touch ~/.hushlogin
GETTY_OVERRIDE="/etc/systemd/system/container-getty@1.service.d/override.conf"
mkdir -p $(dirname $GETTY_OVERRIDE)
cat << EOF > $GETTY_OVERRIDE
[Service]
ExecStart=
ExecStart=-/sbin/agetty --autologin root --noclear --keep-baud tty%I 115200,38400,9600 \$TERM
EOF
systemctl daemon-reload
systemctl restart $(basename $(dirname $GETTY_OVERRIDE) | sed 's/\.d//')
msg "Cleanup..."
rm -rf /pihole_setup.sh /var/{cache,log}/* /var/lib/apt/lists/*