# Use official Python runtime as a parent image
FROM python:3.9-slim

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

# Hugging Face Spaces REQUIRE processes to run as a non-root user (uid 1000)
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# Set working directory in the container
WORKDIR /home/user/app

# Copy requirements file first to leverage Docker cache
COPY --chown=user requirements.txt .

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

# Copy the rest of the application code
COPY --chown=user . /home/user/app

# Expose port that FastAPI runs on internally (HF uses 7860)
EXPOSE 7860

# Start Uvicorn process binding to 0.0.0.0 and dynamically port 7860
CMD uvicorn backend.main:app --host 0.0.0.0 --port 7860