-# Install Docker from the Docker Inc. repository
-RUN apt-get update -qq && apt-get install -qqy iptables ca-certificates lxc apt-transport-https
-RUN echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list
-RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
-RUN apt-get update -qq && apt-get install -qqy lxc-docker
+# Install Docker from the Arvados package repository (cf. arvados/base)
+RUN apt-get install -qqy iptables ca-certificates lxc apt-transport-https docker.io