Dockerfile

# This Dockerfile uses multi-stage build to customize DEV and PROD images:
# https://docs.docker.com/develop/develop-images/multistage-build/

FROM python:3.7.7-slim-buster AS development_build

ARG DJANGO_ENV

ENV DJANGO_ENV=${DJANGO_ENV} \
  # python:
  PYTHONFAULTHANDLER=1 \
  PYTHONUNBUFFERED=1 \
  PYTHONHASHSEED=random \
  # pip:
  PIP_NO_CACHE_DIR=off \
  PIP_DISABLE_PIP_VERSION_CHECK=on \
  PIP_DEFAULT_TIMEOUT=100 \
  # poetry:
  POETRY_VERSION=1.0.5 \
  POETRY_VIRTUALENVS_CREATE=false \
  POETRY_CACHE_DIR='/var/cache/pypoetry'

# System deps:
RUN apt-get update \
  && apt-get install --no-install-recommends -y \
    netcat \
  # Cleaning cache:
  && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* \
  && pip install "poetry==$POETRY_VERSION" && poetry --version

# set work directory
WORKDIR /usr/src/app

COPY pyproject.toml poetry.lock ./
# Project initialization:
RUN echo "$DJANGO_ENV" \
  && poetry install \
    $(if [ "$DJANGO_ENV" = 'production' ]; then echo '--no-dev'; fi) \
    --no-interaction --no-ansi \
  # Cleaning poetry installation's cache for production:
  && if [ "$DJANGO_ENV" = 'production' ]; then rm -rf "$POETRY_CACHE_DIR"; fi

# copy entrypoint.sh
COPY ./entrypoint.sh .

# copy project
COPY . .

RUN chmod +x entrypoint.sh
# run entrypoint.sh
ENTRYPOINT ["/usr/src/app/entrypoint.sh"]