creaded correct docker image creation file

app/blueprints/admin.py

@@ -516,3 +516,100 @@ def delete_single_leftover(content_id):
         flash(f'Error deleting file: {str(e)}', 'danger')
     
     return redirect(url_for('admin.leftover_media'))
+
+
+@admin_bp.route('/dependencies')
+@login_required
+@admin_required
+def dependencies():
+    """Show system dependencies status."""
+    import subprocess
+    
+    # Check LibreOffice
+    libreoffice_installed = False
+    libreoffice_version = "Not installed"
+    try:
+        result = subprocess.run(['libreoffice', '--version'], 
+                              capture_output=True, 
+                              text=True, 
+                              timeout=5)
+        if result.returncode == 0:
+            libreoffice_installed = True
+            libreoffice_version = result.stdout.strip()
+    except Exception:
+        pass
+    
+    # Check Poppler (for PDF)
+    poppler_installed = False
+    poppler_version = "Not installed"
+    try:
+        result = subprocess.run(['pdftoppm', '-v'], 
+                              capture_output=True, 
+                              text=True, 
+                              timeout=5)
+        if result.returncode == 0 or 'pdftoppm' in result.stderr:
+            poppler_installed = True
+            poppler_version = "Installed"
+    except Exception:
+        pass
+    
+    # Check FFmpeg (for video)
+    ffmpeg_installed = False
+    ffmpeg_version = "Not installed"
+    try:
+        result = subprocess.run(['ffmpeg', '-version'], 
+                              capture_output=True, 
+                              text=True, 
+                              timeout=5)
+        if result.returncode == 0:
+            ffmpeg_installed = True
+            ffmpeg_version = result.stdout.split('\n')[0]
+    except Exception:
+        pass
+    
+    return render_template('admin/dependencies.html',
+                         libreoffice_installed=libreoffice_installed,
+                         libreoffice_version=libreoffice_version,
+                         poppler_installed=poppler_installed,
+                         poppler_version=poppler_version,
+                         ffmpeg_installed=ffmpeg_installed,
+                         ffmpeg_version=ffmpeg_version,
+                         emoji_installed=emoji_installed,
+                         emoji_version=emoji_version)
+
+
+@admin_bp.route('/install-libreoffice', methods=['POST'])
+@login_required
+@admin_required
+def install_libreoffice():
+    """Install LibreOffice for PPTX conversion."""
+    import subprocess
+    
+    try:
+        # Run installation script
+        script_path = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 
+                                   'install_libreoffice.sh')
+        
+        if not os.path.exists(script_path):
+            flash('Installation script not found', 'danger')
+            return redirect(url_for('admin.dependencies'))
+        
+        result = subprocess.run(['sudo', 'bash', script_path], 
+                              capture_output=True, 
+                              text=True, 
+                              timeout=300)
+        
+        if result.returncode == 0:
+            log_action('info', 'LibreOffice installed successfully')
+            flash('LibreOffice installed successfully! You can now convert PPTX files.', 'success')
+        else:
+            log_action('error', f'LibreOffice installation failed: {result.stderr}')
+            flash(f'Installation failed: {result.stderr}', 'danger')
+        
+    except subprocess.TimeoutExpired:
+        flash('Installation timeout. Please try again.', 'warning')
+    except Exception as e:
+        log_action('error', f'Error installing LibreOffice: {str(e)}')
+        flash(f'Error: {str(e)}', 'danger')
+    
+    return redirect(url_for('admin.dependencies'))

app/blueprints/content.py

@@ -401,8 +401,8 @@ def process_presentation_file(filepath: str, filename: str) -> tuple[bool, str]:
                 continue
         
         if not libreoffice_cmd:
-            log_action('warning', f'LibreOffice not found, skipping slide conversion for: {filename}')
-            return True, "Presentation accepted without conversion (LibreOffice unavailable)"
+            log_action('warning', f'LibreOffice not found, cannot convert: {filename}')
+            return False, "LibreOffice is not installed. Please install it from the Admin Panel → System Dependencies to upload PowerPoint files."
         
         # Create temporary directory for conversion
         with tempfile.TemporaryDirectory() as temp_dir: