Dockerfile

FROM python:3.12-slim-bookworm

# Prevents Python from writing .pyc files and makes logs appear immediately
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

WORKDIR /usr/src/app

# System deps needed to build psycopg2 (and other compiled wheels)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libpq-dev \
    python3-dev \
    && rm -rf /var/lib/apt/lists/*

# Install Python deps first (better caching)
COPY requirements.txt ./
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Copy app code
COPY . .

# Expose port (optional but nice)
EXPOSE 8000

# Run FastAPI
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]