Update Dockerfile

Dockerfile

@@ -1,10 +1,8 @@
 FROM python:3-slim
 
 # Install Poetry
-ENV POETRY_VERSION "1.1.13"
 RUN pip install six
-RUN pip install poetry==${POETRY_VERSION}
-RUN poetry config virtualenvs.create false
+RUN pip install poetry
 
 WORKDIR /opt/server