Update Dockerfile

Dockerfile

@@ -1,26 +1,24 @@
 # Dockerfile
 FROM python:3.10-slim
 
-# Prevent .pyc files, unbuffered logging
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1
 
 WORKDIR /app
 
-# Install system deps for OCR (optional)
+# Install system deps: OCR, Marker backends, and Pandoc
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
       tesseract-ocr \
+      pandoc \
     && rm -rf /var/lib/apt/lists/*
 
-# Copy & install Python deps
+# Python deps
 COPY requirements.txt .
 RUN pip install --upgrade pip && \
     pip install -r requirements.txt
 
-# Copy application code
 COPY app.py .
 
 EXPOSE 7860
-
 CMD ["python", "app.py"]