v19.1.3: Update docker_build.sh (#13)

Changes:

• Add workarounds for rpmdb errors for docker containers containing Redhat operating systems.

Release 19.1.1

Python3 dockerplugin update (#11)

* Update docker_build.sh

* Update docker_build.sh

* Update utility.py

* Update setup.py

Increment version

* Update docker_build.sh

* Update docker_build.sh

* Update docker_build.sh

* Update docker_build.sh

* Update docker_build.sh

* Update docker_build.sh

* Update docker_build.sh

* Add missing autodocs

Add another test so the coverage numbers don't decrease

* Remove junk from tox.ini

* Remove junk from tox.ini

* Add more tests to address coverage drops.

* Documentation tweaks

* Remove junk from tox.ini

Update docker plugins

This release makes the following changes:

1. Changes to a year.month.release versioning scheme.
2. Updates the docker plugin to support nearly all of the items valid in the dockerfile.

Fixes to docker container generation

Merge pull request #7 from yahoo/docker_fixes

Update readme