install build-essential on Dockerfile

Dockerfile

@@ -1,22 +1,15 @@
-FROM python:3.9-alpine
+FROM python:3.9-slim
 ENV PYTHONUNBUFFERED 1
 WORKDIR /app
 COPY . ./
 
 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
+RUN apt-get update && apt-get install --no-install-recommends -y build-essential
 
-# 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