# ---------- Base Image ----------
FROM python:3.11.11

# ---------- Environment Variables ----------
ENV PYTHONUNBUFFERED=1 \
    OMP_NUM_THREADS=1 \
    TOKENIZERS_PARALLELISM=false

# ---------- Create Non-Root User ----------
# Ensures proper file permissions for dev and runtime
RUN useradd -m -u 1000 user

# ---------- Set Working Directory ----------
WORKDIR /app

# ---------- Install Python Dependencies ----------
# Copy requirements and install as non-root user
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# ---------- Copy Project Files ----------
# Set appropriate ownership and permissions
COPY --link --chown=1000 . .

# ---------- Expose Application Port ----------
EXPOSE 7860

# ---------- Default Command ----------
# Launch app via module path
CMD ["python", "app.py"]