Alpine-based Dockerfile for running iidy

[jpb]

$ docker build -t iidy .
...
Successfully tagged iidy:latest

$ docker images | grep iidy
iidy   latest   00a47799e16d        54 seconds ago      82.9MB

$ docker run --rm -it iidy
$ iidy (Is it done yet?) -- a tool for working with Yaml and the CloudFormation API

Commands:
  create-stack <argsfile>                                create a cfn stack based on stack-args.yaml
  update-stack <argsfile>                                update a cfn stack based on stack-args.yaml
  create-changeset <changesetName> <argsfile>            create a cfn changeset based on stack-args.yaml
  create-stack-via-changeset <changesetName> <argsfile>  create a new stack via a cfn changeset based on stack-args.yaml
  exec-changeset <changesetName> <argsfile>              execute a cfn changeset based on stack-args.yaml
  estimate-cost <argsfile>                               estimate stack costs based on stack-args.yaml
  watch-stack <stackname>                                watch a stack that is already being created or updated
  describe-stack <stackname>                             describe a stack
  get-stack-template <stackname>                         download the template of a live stack
  delete-stack <stackname>                               delete a stack (after confirmation)
  list-stacks                                            list the stacks within a region
  render <template>                                      pre-process and render cloudformation yaml template
  demo <demoscript>                                      run a demo script
  completion                                             generate bash completion script

AWS Options
  --region   AWS region                                                                                [string] [default: null]
  --profile  AWS profile                                                                               [string] [default: null]

Options:
  -v, --version  Show version number                                                                                  [boolean]
  -h, --help     Show help                                                                                            [boolean]

Not enough non-option arguments: got 0, need at least 1

[hyleung]

@jpb haha... I started looking at adding a Dockerfile - including the multi-stage build) this afternoon, but it looks like you've beat me to it!

cc @rymndhng check out the multi-stage build :)

[tavisrudd]

Thanks!