fix: docker

Dockerfile

@@ -1,9 +1,12 @@
-FROM python:3.12-slim
+FROM python:3.12
 
 WORKDIR /app
 
 ENV PYTHONUNBUFFERED=1
 
+RUN apt-get update && apt-get install -y libgl1 \
+    && rm -rf /var/lib/apt/lists/*
+
 RUN pip install pdf2zh
 
 CMD ["pdf2zh", "-i"]