Update Dockerfile

Dockerfile

@@ -1,35 +1,25 @@
-# Use a Debian-based Python image for reliable package installation
 FROM python:3.9-buster
 
-# Prevent Python from writing pyc files and enable unbuffered output
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 
-# Update package lists and install system dependencies:
-# - graphviz (provides the dot executable)
-# - wkhtmltopdf (for PDF generation)
+# Install system packages: poppler-utils is needed for pdf2image; weasyprint has few extra dependencies too.
 RUN apt-get update && apt-get install -y \
-    graphviz \
-    wkhtmltopdf \
-    && ln -sf /usr/bin/dot /usr/local/bin/dot \
-    && ln -sf /usr/bin/wkhtmltopdf /usr/local/bin/wkhtmltopdf \
+    poppler-utils \
+    libpango-1.0-0 \
+    libpangocairo-1.0-0 \
+    libgdk-pixbuf2.0-0 \
+    libffi-dev \
+    libcairo2 \
     && rm -rf /var/lib/apt/lists/*
 
-# Add /usr/local/bin to PATH and set GRAPHVIZ_DOT explicitly
-ENV PATH="/usr/local/bin:${PATH}"
-ENV GRAPHVIZ_DOT="/usr/local/bin/dot"
-
 WORKDIR /app
 
-# Copy and install Python dependencies
 COPY requirements.txt /app/requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy application code
 COPY . /app
 
-# Expose Gradio's default port
 EXPOSE 7860
 
-# Run the application
 CMD ["python", "app.py"]