Dockerfile.api

# ---- CFDQandA API Server ----
# Lightweight container for the FastAPI API server.
# Does NOT include Foam-Agent, OpenFOAM, or Worker — those live in Dockerfile.worker.
#
# Build:  docker build -f Dockerfile.api -t cfdqanda-api .
# Run:    docker run -p 8000:8000 --env-file .env cfdqanda-api
# Size:   ~200 MB

FROM python:3.12-slim

# Prevent Python from writing .pyc files and enable unbuffered stdout/stderr
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

WORKDIR /app

# Install dependencies first (layer caching — only re-run if requirements change)
COPY requirements-api.txt .
RUN pip install --no-cache-dir -r requirements-api.txt

# Copy application code
COPY api_server.py .

# Expose the API port
EXPOSE 8000

# Health check: hit the root endpoint every 30s
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/')" || exit 1

# Run with uvicorn
CMD ["uvicorn", "api_server:app", "--host", "0.0.0.0", "--port", "8000"]