Update Dockerfile

Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3.9-slim
 
-# Install system dependencies
+# Install system dependencies (poppler-utils for pdf2image)
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
     poppler-utils \
@@ -12,12 +12,12 @@ USER user
 ENV PATH="/home/user/.local/bin:$PATH"
 WORKDIR /app
 
-# Copy requirements
+# Copy requirements first (for better caching)
 COPY --chown=user requirements.txt .
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-# Copy app
+# Copy the rest of the app
 COPY --chown=user . .
 
-# Correct command for Streamlit
+# Run Streamlit
 CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]