fixed Dockerfile

Dockerfile

@@ -2,7 +2,7 @@ FROM python:3.9-alpine
 
 RUN apk add --update gcc libc-dev linux-headers curl && rm -rf /var/cache/apk/*
 
-RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python -
+RUN curl -sSL https://install.python-poetry.org | python -
 COPY . /opt/SpotifyBackup
 
 WORKDIR /opt/SpotifyBackup