Dockerfile

FROM python:3.9-slim

WORKDIR /app

# Install dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create upload directory and set permissions
RUN mkdir -p /tmp/uploads && \
    chmod 777 /tmp/uploads

# Create a non-root user and switch to it
RUN useradd -m appuser && \
    chown -R appuser:appuser /app
USER appuser

# Run the application
CMD ["python", "app.py"]