move to using docker for builds

[robby-d]

create Dockerfiles and build_docker.py script that will:

• take a command line arg (or prompt) for the role to build
  • multiple docker files, one for each build config...e.g. counterwallet_simple, counterwallet_full, counterpartyd_only, etc
  • all docker files build off of https://github.com/phusion/baseimage-docker
• execute the build process to generate a docker image for the specified role
  • the Dockerfile will download and call setup_federated_node.py itself, to build the federated node in the docker image with the approprite command line options
    (we will use this all with automated builds on dockerhub, and each build variant will be a tag)

Images I'd be planning:

• counterwallet_bitcoind: Uses bitcoind, no insight (uses blockr.io), and auto downloads the bitcoind blockchain data and counterpartyd and counterblock databases on first boot via bittorrent or s3 site
• counterwallet_simple: Uses pyrpcwallet (and blockr.io), no insight (uses blockr.io), and auto downloads the counterpartyd and counterblock databases on first boot via bittorrent or s3 site
• counterpartyd_simple: Same as counterwallet_simple, but only runs counterpartyd, with open port access and rpc/1234 username/password on rpc services by default...allows easy dev counterpartyd access

Future possible images:

• counterwallet_full: Uses bitcoind and insight. Blockchain data must manually download
• vending_machine
• autobtcescrow_agent
• whatever else

More notes:

• build logic for everything except ubuntu 14.04 can then be ripped out (I'm thinking) of setup_federated_node.py since other OSes can just use the docker image. alert users to this because this is disruptive though
• ubuntu 14.04-based systems can still use setup_federated_node.py directly. this is especially important for production servers where we want everything to run on bare metal, and the hardware is dedicated (e.g. counterwallet.co)
• also, include plenty of documentation for using the docker images on windows, macos, and other versions of linux

Docker resources:

• https://gist.github.com/wsargent/7049221
• http://crosbymichael.com/dockerfile-best-practices-take-2.html

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[unsystemizer]

@deweller this probably can be closed