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node-red2_setup.sh

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+#!/usr/bin/env bash
+
+# Setup script environment
+set -o errexit  #Exit immediately if a pipeline returns a non-zero status
+set -o errtrace #Trap ERR from shell functions, command substitutions, and commands from subshell
+set -o nounset  #Treat unset variables as an error
+set -o pipefail #Pipe will exit with last non-zero status if applicable
+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"
+}
+
+# Prepare container OS
+msg "Setting up container OS..."
+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
+
+# Update container OS
+msg "Updating container OS..."
+apt-get update >/dev/null
+apt-get -qqy upgrade &>/dev/null
+
+# Install prerequisites
+msg "Installing prerequisites..."
+apt-get -qqy install \
+    curl \
+    sudo &>/dev/null
+
+msg "Installing NVM..."
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/master/install.sh | bash &>/dev/null
+
+msg "Installing Node.js 16.7..."
+nvm install v16.7.0 &>/dev/null
+
+msg "Installing PM2..."
+npm install -g pm2 &>/dev/null 
+
+# Install Node Red
+msg "Installing Node-RED..."
+npm install -g --unsafe-perm node-red &>/dev/null
+
+# Set up PM2 to manage startup of Node Red
+msg "Setting up PM2..."
+/usr/local/bin/pm2 start /usr/local/bin/node-red  &>/dev/null
+/usr/local/bin/pm2 save &>/dev/null
+/usr/local/bin/pm2 startup &>/dev/null
+
+# Customize container
+msg "Customizing container..."
+rm /etc/motd # Remove message of the day after login
+rm /etc/update-motd.d/10-uname # Remove kernel information after login
+touch ~/.hushlogin # Remove 'Last login: ' and mail notification after login
+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//')
+
+# Cleanup container
+msg "Cleanup..."
+rm -rf /node-red_setup.sh /var/{cache,log}/* /var/lib/apt/lists/*