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setup/ubuntu_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'
+CHECKMARK='\033[0;32m\xE2\x9C\x94\033[0m'
+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"
+}
+
+echo -e "${CHECKMARK} \e[1;92m Setting up Container OS... \e[0m"
+sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
+locale-gen >/dev/null
+apt-get -y purge openssh-{client,server} >/dev/null
+apt-get autoremove >/dev/null
+
+echo -e "${CHECKMARK} \e[1;92m Updating Container OS \e[0m"
+apt update &>/dev/null
+apt-get -qqy upgrade &>/dev/null
+
+echo -e "${CHECKMARK} \e[1;92m Installing Dependencies... \e[0m"
+apt-get -qqy install \
+    curl \
+    sudo &>/dev/null
+
+echo -e "${CHECKMARK} \e[1;92m Customizing LXC... \e[0m"
+chmod -x /etc/update-motd.d/*
+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 $GETTY_OVERRIDE) | sed 's/\.d//')
+
+echo -e "${CHECKMARK} \e[1;92m Cleanup... \e[0m"
+rm -rf /ubuntu_setup.sh /var/{cache,log}/* /var/lib/apt/lists/*