Update Dockerfile

Dockerfile

@@ -1,17 +1,28 @@
-# Use Python 3.10 as base image
-FROM python:3.10.9
+# Use Python 3.11 (has SQLite 3.40+) instead of 3.10
+FROM python:3.11-slim
+
+# Create non-root user for security
+RUN useradd -m -u 1000 user
+USER user
+
+# Set environment variables
+ENV PATH="/home/user/.local/bin:$PATH"
+ENV PYTHONUNBUFFERED=1
 
 # Set working directory
 WORKDIR /app
 
-# Copy all files to container
-COPY . /app
+# Copy requirements first for better caching
+COPY --chown=user ./requirements.txt requirements.txt
 
 # Install Python dependencies
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-# Expose port 7860 (Hugging Face Spaces default port)
+# Copy application files
+COPY --chown=user . /app
+
+# Expose port 7860 (Hugging Face Spaces requirement)
 EXPOSE 7860
 
-# Run the FastAPI app
+# Run the FastAPI application
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]