LXC Setup

Provision LXC's with this script

This script is custom tailored to my usecase but this will install and setup ufw, tailscale and docker.

Custom script

This script will automatically install Docker on your Linux system.

curl -fsSL -o lxc.sh https://git.assie.tech/lars.assink/bash/raw/branch/main/lxc.sh

The script:

#!/usr/bin/env bash
set -e

# === Appearance ===
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m'
CHECK="${GREEN}✔${NC}"
CROSS="${RED}✖${NC}"
SPINNER_CHARS=('⠋' '⠙' '⠹' '⠸' '⠼' '⠴' '⠦' '⠧' '⠇' '⠏')

VERBOSE=false
LOG_FILE="/tmp/install.log"

spinner() {
  local pid=$1
  local msg=$2
  local i=0

  while kill -0 "$pid" 2>/dev/null; do
    printf "\r[%s] %s" "${SPINNER_CHARS[$i]}" "$msg"
    i=$(((i + 1) % ${#SPINNER_CHARS[@]}))
    sleep 0.1
  done
}

run_step() {
  local description="$1"
  shift

  if $VERBOSE; then
    echo "[*] $description"
    if "$@"; then
      echo -e "[${CHECK}] $description"
    else
      echo -e "[${CROSS}] $description"
      exit 1
    fi
  else
    {
      "$@" > "$LOG_FILE" 2>&1
    } &
    local pid=$!
    spinner "$pid" "$description"
    if wait "$pid"; then
      printf "\r[${CHECK}] %s\n" "$description"
    else
      printf "\r[${CROSS}] %s (see $LOG_FILE)\n" "$description"
      tail -n 20 "$LOG_FILE"
      exit 1
    fi
  fi
}

install_all() {
#  run_step "Updating system" bash -c "apt update && apt upgrade -y"

  run_step "Installing base packages" bash -c "apt install -y curl ufw"

  run_step "Setting up UFW" bash -c '
    ufw default deny incoming
    ufw default allow outgoing
    ufw allow in on tailscale0
    ufw allow ssh
    echo "y" | ufw enable
  '

  run_step "Installing Docker" bash -c "curl -fsSL https://cdn.aio.sh/docker.sh | sh"

  run_step "Installing Tailscale" bash -c "curl -fsSL https://tailscale.com/install.sh | sh"

  run_step "Installing NVM" bash -c "
    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash
  "

  export NVM_DIR="$HOME/.nvm"
  # shellcheck source=/dev/null
  [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
  [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"

  run_step "Installing Node.js" bash -c "nvm install 24.4.1 && nvm use 24.4.1"

  run_step "Cleaning up" bash -c "true"

  echo -e "\n${GREEN}[*] Done.${NC}"
}

show_ascii_art() {
  cat << "EOF"
                        .        .            ,;
                       ;W       ;Wt         f#i
            ..        f#E      f#EEj      .E#t
           ;W,      .E#f     .E#f E#,    i#W,
          j##,     iWW;     iWW;  E#t   L#D.
         G###,    L##Lffi  L##LffiE#t :K#Wfff;
       :E####,   tLLG##L  tLLG##L E#t i##WLLLLt
      ;W#DG##,     ,W#i     ,W#i  E#t  .E#L
     j###DW##,    j#E.     j#E.   E#t    f#E:
    G##i,,G##,  .D#j     .D#j     E#t     ,WW;
  :K#K:   L##, ,WK,     ,WK,      E#t      .D#;
 ;##D.    L##, EG.      EG.       E#t        tt
 ,,,      .,,  ,        ,         ,;.
EOF
}

main_menu() {
  clear
  show_ascii_art
  echo ""
  echo "Choose an option:"
  echo "1) Install"
  echo "2) Install (verbose)"
  echo "3) Exit"
  echo -n "> "
  read -r choice

  case $choice in
    1)
      VERBOSE=false
      clear
      install_all
      ;;
    2)
      VERBOSE=true
      clear
      install_all
      ;;
    3)
      echo "Exiting..."
      exit 0
      ;;
    *)
      echo "Invalid choice"
      sleep 1
      main_menu
      ;;
  esac
}

main_menu