fix: config file

Dockerfile

@@ -16,5 +16,13 @@ RUN mkdir -p /.cache
 RUN chmod 777 /.cache
 RUN mkdir -p ./gradio_files
 RUN chmod 777 ./gradio_files
+RUN mkdir -p ~/.config
+RUN chmod 777 ~/.config
+RUN mkdir -p ~/.config/PDFMathTranslate
+RUN chmod 777 ~/.config/PDFMathTranslate
+
+
+# write several lines to the file ~/.config/PDFMathTranslate/config.json
+RUN echo '{ "USE_MODELSCOPE": "0", "PDF2ZH_LANG_FROM": "English", "PDF2ZH_LANG_TO": "Simplified Chinese", "NOTO_FONT_PATH": "/app/SourceHanSerifCN-Regular.ttf", "translators":[]}' > ~/.config/PDFMathTranslate/config.json
 
 CMD ["pdf2zh", "-i"]