This Dockerfile is close to the 'r-base' container for Rocker -- which is the same container as the official 'r-base' container for R -- but based on Ubuntu LTS. And while 'r-base' uses Debian testing, this container is based on the LTS release and connects to the PPA by Michael Rutter with over 4,000 r-cran-* packages.
To install, use the explicit LTS tag---currently 18.04---when pulling
docker pull rocker/r-ubuntu:18.04as we do not want to use latest (which may suggest an interim Ubuntu release between the bi-annual LTS schedule).
As always, this is work in progress -- please come and talk to @eddelbuettel and @cboettig (via GitHub issue tickets) about how to get involved.
Documentation is being added at the Wiki.