Add a Dockerfile, for Science

```sh

docker run -it --rm -v /srv/helios.pault.ag/congress:/congress unitedstates/congress bills
```

Now we're civic hacking with Science!


```sh
[tag@helios:/srv/helios.pault.ag/congress][⌚ 12:50 PM] →  ls
cache  data
```

As soon as everyone's cool with this, I'll go ahead and set up a index autobuild for this.