Add --no-install-recommends to google-cloud-build/ci-scripts/scripts/Dockerfile

Author: tkilias

google-cloud-build/ci-scripts/scripts/Dockerfile

@@ -3,7 +3,7 @@ FROM ubuntu:18.04
 ENV LC_ALL=C.UTF-8
 ENV LANG=C.UTF-8
 RUN apt-get update && \
-    apt-get install -y python3-pip git curl && \
+    apt-get install -y --no-install-recommends python3-pip python3-setuptools git curl && \
     apt-get -y clean && \
     apt-get -y autoremove
 RUN pip3 install pipenv