OperationCode/back-end

FROM python:3.7-alpine AS base

# Using seperate docker stage for building dependencies
FROM base as builder

ENV PIP_DISABLE_PIP_VERSION_CHECK on
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV PIP_NO_BINARY psycopg2

# Install tools for building dependencies
RUN apk update && \
    apk add --no-cache libffi-dev \
                       postgresql-dev \
                       gcc \
                       python3-dev \
                       musl-dev \
                       zlib-dev \
                       jpeg-dev

RUN python -m venv /opt/venv
# Make sure we use the virtualenv:
ENV PATH="/opt/venv/bin:$PATH"

COPY poetry.lock pyproject.toml ./

RUN pip install poetry && \
    poetry config virtualenvs.create false && \
    poetry install --no-dev --no-interaction --no-ansi


# The `built-image` stage is the base for all remaining images
# Pulls all of the built dependencies from the builder stage
FROM base as built-image
ENV PIP_DISABLE_PIP_VERSION_CHECK on
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV PIP_NO_BINARY psycopg2

# copy installed deps from builder image
COPY --from=builder /opt/venv /opt/venv

# Add libpq and libjpeg which psycopg2 and pillow need at runtime
RUN apk add --no-cache libpq libjpeg-turbo

# Make sure we use the virtualenv
ENV PATH="/opt/venv/bin:$PATH"

# The `app` stage is used as the base for images that don't
# need the development dependencies
FROM built-image as app

ENV DJANGO_ENV production
ENV DB_ENGINE django.db.backends.postgresql
RUN mkdir /static
COPY src /src
COPY .dev /src/.dev
WORKDIR /src


# `Shell` will build an image that, when run, drops you into a
# python shell with the application context loaded
# Note this stage name is capitalised, this is purely
# a convetion for stages which result in useful images. Think of it like
# hint that this is a public interface
FROM app AS Shell
LABEL shell=true
CMD python manage.py shell


# The `Prod` stage creates an image that will run the application using a
# production webserver and the `environments/production.py` configuration
FROM app As Prod

EXPOSE 8000
CMD python manage.py process_tasks &\
  gunicorn operationcode_backend.wsgi -c /src/gunicorn_config.py