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FROM python:3.11-slim
# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONPATH=/app
ENV PORT=8080
ENV MODEL_NAME=microsoft/Phi-3.5-mini-instruct
ENV LOG_LEVEL=INFO
ENV RAILWAY_ENVIRONMENT=production
# Install system dependencies
RUN apt-get update && apt-get install -y \
build-essential \
curl \
git \
&& rm -rf /var/lib/apt/lists/*
# Create application directory
WORKDIR /app
# Copy requirements first for better caching
COPY requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt
# Copy scripts first (so model can download before code changes)
COPY scripts/download_model.py ./scripts/
RUN python scripts/download_model.py
# Copy all backend code
COPY . .
# Create necessary directories
RUN mkdir -p models logs static
# Create non-root user
RUN useradd -m -u 1000 saemsai
RUN chown -R saemsai:saemsai /app
USER saemsai
# Expose port (MUST MATCH RAILWAY CONFIG)
EXPOSE 8080
# Health check (uses internal port)
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
CMD curl -f http://localhost:8080/api/health || exit 1
# Start application
CMD ["python", "railway_app.py"]
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