Dockerfile to build a ubuntu:15.04 baseimage with a couple of extra packages.
The image is built on top of the most recently tagged ubuntu:15.04 image and installs the following extra packages:
wgetsudonet-toolsca-certificatesunzip
The packages are selected based on the criteria that they are commonly used and that they do not influence the size of the resulting image too much.
Additionally apt is configured to NOT install recommended and suggested packages.