slim image for coscmd

coscmd/Dockerfile

@@ -1,7 +1,6 @@
-FROM python:2
+FROM python:3.7-slim
 LABEL maintainer="Stille <[email protected]>"
 
 ENV VERSION 1.8.6.24
 
-RUN pip install coscmd
-
+RUN pip install --upgrade --no-cache-dir coscmd