creaded correct docker image creation file

install_libreoffice.sh

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+#!/bin/bash
+# LibreOffice installation script for DigiServer v2
+# This script installs LibreOffice for PPTX to image conversion
+
+set -e
+
+echo "======================================"
+echo "LibreOffice Installation Script"
+echo "======================================"
+echo ""
+
+# Check if running as root
+if [ "$EUID" -ne 0 ]; then 
+    echo "❌ This script must be run as root or with sudo"
+    exit 1
+fi
+
+# Check if already installed
+if command -v libreoffice &> /dev/null; then
+    VERSION=$(libreoffice --version 2>/dev/null || echo "Unknown")
+    echo "✅ LibreOffice is already installed: $VERSION"
+    exit 0
+fi
+
+echo "📦 Installing LibreOffice..."
+echo ""
+
+# Update package list
+echo "Updating package list..."
+apt-get update -qq
+
+# Install LibreOffice
+echo "Installing LibreOffice (this may take a few minutes)..."
+apt-get install -y libreoffice libreoffice-impress
+
+# Verify installation
+if command -v libreoffice &> /dev/null; then
+    VERSION=$(libreoffice --version 2>/dev/null || echo "Installed")
+    echo ""
+    echo "✅ LibreOffice successfully installed: $VERSION"
+    echo ""
+    echo "You can now upload and convert PowerPoint presentations (PPTX files)."
+    exit 0
+else
+    echo ""
+    echo "❌ LibreOffice installation failed"
+    exit 1
+fi