chore: using poetry

Dockerfile

@@ -1,12 +1,52 @@
-FROM python:3.8
+FROM python:3.8-slim-buster
 
-ADD . /app
-WORKDIR /app
+ARG SCOPE
 
-RUN apt-get update && apt-get install -y \
+# Setup env
+ENV SCOPE=${SCOPE} \
+  # python
+  PYTHONDONTWRITEBYTECODE=1 \
+  PYTHONFAULTHANDLER=1 \
+  PYTHONUNBUFFERED=1 \
+  PYTHONHASHSEED=random \
+  LC_ALL=C.UTF-8 \
+  LANG=C.UTF-8 \
+  # pip
+  PIP_NO_CACHE_DIR=off \
+  PIP_DISABLE_PIP_VERSION_CHECK=on \
+  PIP_DEFAULT_TIMEOUT=100 \
+  # poetry:
+  POETRY_VERSION=1.1.13 \
+  POETRY_NO_INTERACTION=1 \
+  POETRY_VIRTUALENVS_CREATE=false \
+  POETRY_CACHE_DIR='/var/cache/pypoetry' \
+  POETRY_HOME='/usr/local'
+
+SHELL ["/bin/bash", "-eo", "pipefail", "-c"]
+
+RUN apt-get update && apt-get upgrade -y \
+  && apt-get install --no-install-recommends -y \
     bash \
-    default-libmysqlclient-dev \
+    curl \
     build-essential \
-    && pip install --no-cache-dir -r /app/requirements.txt
+    default-libmysqlclient-dev \
+    libpq-dev \
+  # Installing `poetry` package manager:
+  # https://github.com/python-poetry/poetry
+  && curl -sSL 'https://install.python-poetry.org' | python - \
+  && poetry --version \
+  # Cleaning cache:
+  && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
+  && apt-get clean -y && rm -rf /var/lib/apt/lists/*
 
-CMD ["/app/commands/run-prod.sh"]
+# Copy only requirements to cache them in docker layer
+WORKDIR /code
+COPY poetry.lock pyproject.toml /code/
+
+RUN poetry config virtualenvs.create false \
+  && poetry install $(test "$SCOPE" == production && echo "--no-dev") --no-interaction --no-ansi
+
+# Creating folders, and files for a project:
+COPY . /code
+
+CMD ["/code/commands/run-prod.sh"]