publish a Docker container

[warner]

Dean pointed out it'd be a lot easier to play with this if we had a docker container that included the right/recent version of Node and the dependencies pre-installed.

[dckc]

@dtribble can you elaborate on the use case at all here? I got started (#14) but then I couldn't tell how close I was to finished.

[warner]

I think what we could really use is a container that just offers the vat and client executables, ready to run. I guess the use case is for someone who doesn't know how Node.js works and doesn't want to run npm install -g playground-vat (assuming we'd published it to npm correctly), but wants to experiment with vat create and vat run and client run (although TBH I don't remember if client run actually works right now).

I don't know Docker very well.. #14 might do just that, although I see mention of examples/quorum so maybe it's doing slightly too much? Not sure.

[dckc]

I published the result on docker hub; it's set up to automatically rebuild on pushes to my fork:

https://hub.docker.com/r/dckc/playground-vat

For example:

$ docker pull dckc/playground-vat
Using default tag: latest
latest: Pulling from dckc/playground-vat
Digest: sha256:b8bf4aad87872cb9fb48fec6ea9fc0922e913381485c482bebbd55726689c02f

To finish this issue, you guys should set up an account and do likewise. I'm happy to help if you get stuck or whatever.

p.s. I think https://cloud.docker.com/u/dckc/repository/docker/dckc/playground-vat is the administrative interface that I see when I'm logged in.