update Dockerfile to use poetry

Dockerfile

@@ -1,19 +1,24 @@
-FROM python:3.7-alpine
+FROM python:3.9-alpine
 ENV PYTHONUNBUFFERED 1
 WORKDIR /app
-COPY requirements.txt ./
-COPY requirements.production.txt ./
 COPY . ./
 
-# uWSGI, gunicorn etc.
-RUN apk add --no-cache python3-dev build-base linux-headers pcre-dev openssl bash \
+ENV POETRY_VERSION=1.1.4
+
+# Rust and shit https://cryptography.io/en/latest/installation.html
+RUN apk --no-cache --update --upgrade add gcc musl-dev python3-dev libffi-dev openssl-dev cargo \
+  # Pillow and maybe some unnneeded?
+  jpeg-dev zlib-dev build-base linux-headers pcre-dev bash \
   # PSQL
-  && apk add --no-cache postgresql-dev \
-  # Pillow
-  && apk add --no-cache jpeg-dev zlib-dev \
-  && pip install --upgrade pip \
-  && pip install -r requirements.txt \
-  && pip install -r requirements.production.txt
+  && apk add --no-cache postgresql-dev
+
+# System deps:
+RUN pip install -U pip
+RUN pip install "poetry==$POETRY_VERSION"
+
+# Project initialization:
+RUN poetry config virtualenvs.create false \
+  && poetry install --no-dev --no-interaction --no-ansi
 
 RUN python manage.py collectstatic --noinput
 

docker-compose.yml

@@ -13,7 +13,6 @@ services:
   web:
     build: .
     image: registry.gitlab.com/sahkoinsinoorikilta/vtmk/web2.0-backend
-    command: ["bash", "-c", "cd /app & bash setup.sh --no-input --no-npm && gunicorn -w 4 -b 0.0.0.0:8000 sikweb.wsgi"]
     env_file:
       - .env
     ports: