add PDF reader

Dockerfile

@@ -7,6 +7,9 @@ RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/*
 
+# Create a non-root user
+RUN useradd -m appuser
+
 WORKDIR /app
 
 COPY . /app
@@ -14,6 +17,12 @@ COPY . /app
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Change ownership of the /app directory to appuser
+RUN chown -R appuser:appuser /app
+
+# Switch to the non-root user
+USER appuser
+
 EXPOSE 7861
 
-CMD ["python", "app.py"]
+CMD ["python", "app.py"]