Update gems
Create a Docker image
Update README
Add beaker tests
import keyword is needed for puppet tests
Do not use firewall in docker
Lock minitest for bundler
Workaround for https://github.com/swipely/docker-api/issues/202
Upgraded librarian-puppet lock
QA run in containers
Use certname with puppet
Need to wait a bit for postgres to be up
Use a snapshot for the CI build of docker image

And the final version for Beaker tests
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Simplify Beaker tests with Docker tomcat instance