Update Dockerfile

Dockerfile

@@ -1,6 +1,19 @@
 FROM python:3.11-slim
 
-# HuggingFace Spaces runs as user 1000 — set it up properly
+# System libraries required by WeasyPrint (Pango, Cairo, GObject)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libpango-1.0-0 \
+    libpangoft2-1.0-0 \
+    libpangocairo-1.0-0 \
+    libcairo2 \
+    libgdk-pixbuf-2.0-0 \
+    libffi-dev \
+    shared-mime-info \
+    fonts-liberation \
+    fonts-dejavu-core \
+    && rm -rf /var/lib/apt/lists/*
+
+# HuggingFace Spaces runs as user 1000
 RUN useradd -m -u 1000 user
 USER user
 
@@ -19,5 +32,4 @@ COPY --chown=user . .
 # HF Docker Spaces expect port 7860
 EXPOSE 7860
 
-# FastAPI via uvicorn — 0.0.0.0 required for HF to route traffic in
 CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]