Update Dockerfile

Dockerfile

@@ -2,19 +2,23 @@ FROM python:3.9-slim
 
 WORKDIR /app
 
-# Install LaTeX with a more comprehensive approach
+# Install LaTeX with comprehensive Chinese support
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
-    texlive \
-    texlive-latex-extra \
-    texlive-fonts-recommended \
-    texlive-lang-english \
-    texlive-science \
+    texlive-full \
+    fonts-noto-cjk \
+    fonts-noto-cjk-extra \
+    fonts-wqy-microhei \
+    fonts-wqy-zenhei \
+    fonts-arphic-ukai \
+    fonts-arphic-uming \
+    fontconfig \
+    && fc-cache -fv \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-# Verify that pdflatex is installed and in PATH
-RUN which pdflatex || (echo "pdflatex not found in PATH" && exit 1)
+# Verify that all LaTeX engines are installed and in PATH
+RUN which pdflatex && which xelatex && which lualatex || (echo "LaTeX engines not found in PATH" && exit 1)
 
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
@@ -22,7 +26,7 @@ RUN pip install --no-cache-dir -r requirements.txt
 COPY app.py .
 
 # Add a debugging script to check installation
-RUN echo "#!/bin/bash\necho 'Checking pdflatex installation:'\nwhich pdflatex\nls -la \$(which pdflatex)\necho 'LaTeX version:'\npdflatex --version" > /app/check_latex.sh && \
+RUN echo "#!/bin/bash\necho 'Checking LaTeX engines installation:'\necho 'pdflatex:' && which pdflatex && pdflatex --version | head -1\necho 'xelatex:' && which xelatex && xelatex --version | head -1\necho 'lualatex:' && which lualatex && lualatex --version | head -1\necho 'Available fonts:'\nfc-list | grep -i 'noto\\|wqy\\|arphic' | head -10" > /app/check_latex.sh && \
     chmod +x /app/check_latex.sh
 
 EXPOSE 8501