#!/usr/bin/env bash YW=$(echo "\033[33m") RD=$(echo "\033[01;31m") BL=$(echo "\033[36m") GN=$(echo "\033[1;92m") CL=$(echo "\033[m") RETRY_NUM=10 RETRY_EVERY=3 NUM=$RETRY_NUM CM="${GN}✓${CL}" CROSS="${RD}✗${CL}" BFR="\\r\\033[K" HOLD="-" 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 function error_exit() { trap - ERR local reason="Unknown failure occurred." local msg="${1:-$reason}" local flag="${RD}‼ ERROR ${CL}$EXIT@$LINE" echo -e "$flag $msg" 1>&2 exit $EXIT } function msg_info() { local msg="$1" echo -ne " ${HOLD} ${YW}${msg}..." } function msg_ok() { local msg="$1" echo -e "${BFR} ${CM} ${GN}${msg}${CL}" } function msg_error() { local msg="$1" echo -e "${BFR} ${CROSS} ${RD}${msg}${CL}" } msg_info "Setting up Container OS " sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen locale-gen >/dev/null while [ "$(hostname -I)" = "" ]; do echo 1>&2 -en "${CROSS}${RD} No Network! " sleep $RETRY_EVERY ((NUM--)) if [ $NUM -eq 0 ]; then echo 1>&2 -e "${CROSS}${RD} No Network After $RETRY_NUM Tries${CL}" exit 1 fi done msg_ok "Set up Container OS" msg_ok "Network Connected: ${BL}$(hostname -I)" set +e alias die='' if nc -zw1 8.8.8.8 443; then msg_ok "Internet Connected"; else msg_error "Internet NOT Connected" read -r -p "Would you like to continue anyway? " prompt if [[ $prompt == "y" || $prompt == "Y" || $prompt == "yes" || $prompt == "Yes" ]]; then echo -e " ⚠️ ${RD}Expect Issues Without Internet${CL}" else echo -e " 🖧 Check Network Settings" exit 1 fi fi RESOLVEDIP=$(nslookup "github.com" | awk -F':' '/^Address: / { matched = 1 } matched { print $2}' | xargs) if [[ -z "$RESOLVEDIP" ]]; then msg_error "DNS Lookup Failure"; else msg_ok "DNS Resolved github.com to $RESOLVEDIP"; fi alias die='EXIT=$? LINE=$LINENO error_exit' set -e msg_info "Updating Container OS" apt-get update &>/dev/null apt-get -y upgrade &>/dev/null msg_ok "Updated Container OS" msg_info "Installing Dependencies" apt-get install -y curl &>/dev/null apt-get install -y sudo &>/dev/null msg_ok "Installed Dependencies" msg_info "Installing Technitium DNS" curl -sSL https://download.technitium.com/dns/install.sh | sudo bash &>/dev/null msg_ok "Installed Technitium DNS" PASS=$(grep -w "root" /etc/shadow | cut -b6) if [[ $PASS != $ ]]; then msg_info "Customizing Container" 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 $GETTY_OVERRIDE) cat <$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_ok "Customized Container" fi msg_info "Cleaning up" apt-get autoremove >/dev/null apt-get autoclean >/dev/null msg_ok "Cleaned"