this is apparently still needed

Dockerfile.gpu

@@ -4,7 +4,7 @@ MAINTAINER Piero Toffanin <pt@masseranolabs.com>
 EXPOSE 3000
 
 USER root
-RUN apt-get update && apt-get install -y curl gpg-agent
+RUN apt-get update && apt-get install -y curl gpg-agent ca-certificates
 RUN curl --silent --location https://deb.nodesource.com/setup_10.x | bash -
 RUN apt-get install -y nodejs unzip p7zip-full && npm install -g nodemon && \
     ln -s /code/SuperBuild/install/bin/untwine /usr/bin/untwine && \