Use non-dev version of libstdc++ (+ Dockerfile formatting)

Author: jnms-me

Dockerfile

@@ -1,34 +1,20 @@
-FROM python:3.13.2-alpine3.21 AS requirements
-
-RUN pip install poetry-plugin-export
-
+FROM python:3.13.2-alpine3.21 AS base
 WORKDIR /de-denker
 
+FROM base AS requirements
+RUN pip install poetry-plugin-export
 COPY pyproject.toml poetry.lock ./
-
 RUN poetry export --without-hashes --format=requirements.txt > requirements.txt
 
-FROM python:3.13.2-alpine3.21 AS build
-
+FROM base AS build
+RUN apk add --no-cache build-base
 ENV PYTHONDONTWRITEBYTECODE=1
-
-WORKDIR /de-denker
-
-RUN apk add build-base
-
 COPY --from=requirements /de-denker/requirements.txt .
-
 RUN pip install -r requirements.txt
 
-FROM python:3.13.2-alpine3.21
-
-WORKDIR /de-denker
-
-RUN apk add --no-cache libgomp libstdc++-dev
-
+FROM base AS artifact
+RUN apk add --no-cache libgomp libstdc++
 COPY --from=build /usr/local/lib/python3.13/site-packages /usr/local/lib/python3.13/site-packages
 COPY --from=build /usr/local/bin /usr/local/bin
-
 COPY config.py main.py models.py static_probabilities.py telraam_api.py ./
-
 CMD ["python", "main.py"]