#!/bin/bash
# Docker installation script for LXC container in Proxmox

# Exit on any error
set -e

echo "Starting Docker installation for LXC container..."

# Fix DNS if needed
echo "Checking and fixing DNS configuration..."
if ! grep -q "nameserver" /etc/resolv.conf; then
  echo "DNS configuration missing or empty, adding Google DNS servers..."
  echo "nameserver 8.8.8.8
nameserver 8.8.4.4" > /etc/resolv.conf
  echo "DNS configuration fixed."
fi

# Install basic tools first
echo "Installing basic tools..."
apt update
apt install -y curl wget apt-transport-https ca-certificates gnupg lsb-release

# Update the system
echo "Updating system packages..."
apt update && apt upgrade -y

# Download the Docker installation script
echo "Downloading official Docker installation script..."
curl -fsSL https://get.docker.com -o get-docker.sh

# Make it executable
chmod +x get-docker.sh

# Run the installation script
echo "Running Docker installation script..."
sh ./get-docker.sh

# Install Docker Compose
echo "Installing Docker Compose..."
curl -L "https://github.com/docker/compose/releases/download/v2.20.3/docker-compose-linux-$(uname -m)" -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

# Enable Docker to start on boot
echo "Enabling Docker to start on boot..."
systemctl enable docker

# Verify installations
echo "Verifying installations..."
docker --version
docker-compose --version

echo "Docker installation complete!"
echo "You can now use Docker and Docker Compose in your LXC container."