use only TheCodeLabs-BaseUtils (no gevent dependency) + resetted Dockerfile

Dockerfile

 FROM python:3.7-alpine
 
-RUN apk add --no-cache --virtual .build-deps gcc musl-dev libffi-dev py3-gevent
-
 RUN pip install pipenv
 COPY . /opt/SpotifyBackup
 
@@ -9,6 +7,4 @@ WORKDIR /opt/SpotifyBackup
 RUN pipenv install
 RUN ln -s $(pipenv --venv) /opt/SpotifyBackup/mypipenv
 
-RUN apk del .build-deps gcc musl-dev libffi-dev py3-gevent
-
 CMD [ "/opt/SpotifyBackup/mypipenv/bin/python", "/opt/SpotifyBackup/SpotifyBackup.py" ]
\ No newline at end of file

Pipfile

@@ -13,6 +13,6 @@ python_version = "3.7"
 
 [packages]
 spotipy = "==2.10.0"
-PythonLibs = "==1.0.0"
+TheCodeLabs-BaseUtils = "==1.0.0"
 
 [dev-packages]