# Using lightweight alpine image
FROM python:3-alpine

# Optimize Python behaviors for Docker
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV PROMETHEUS_MULTIPROC_DIR=/dev/shm
ENV PAPERSIZE=letter

# Defining working directory and adding source code
WORKDIR /AtmoAssistant
COPY . .

# Install requirements
RUN python -m pip install --no-cache-dir -r requirements.txt

# Start app
ENTRYPOINT [ "gunicorn" ]