-# Install Docker from the Arvados package repository
-RUN apt-get update -qq && apt-get install -qqy iptables ca-certificates lxc apt-transport-https
-ADD apt.arvados.org.list /etc/apt/sources.list.d/apt.arvados.org.list
-RUN apt-key adv --keyserver pool.sks-keyservers.net --recv 1078ECD7
-RUN apt-get update -qq && apt-get install -qqy docker.io
+# Install Docker from the Arvados package repository (cf. arvados/base)
+RUN apt-get install -qqy iptables ca-certificates lxc apt-transport-https docker.io