Built off the [jruby](https://hub.docker.com/_/jruby/) `Dockerfile`,
it installs gem requirements via `bundler`, installs and runs a
`redis-server`, imports the current working directory, starts
`vmpooler`, and tails the logfile.
Creating a `vmpooler.yaml` configuration file in the current working
directory and running the following provides a development environment:
```
docker build -t vmpooler . && docker run -p 80:4567 -it vmpooler
```