Document building new image from current directory

[KyleAMathews]

It's a very common task to need to build a new image from within a directory. I.e. use a Dockerfile + various source files that need ADDed.

This was my solution:

  tar = require 'tar-fs'
  console.log 'building new image'
  tarStream = tar.pack(process.cwd())
  docker.buildImage(tarStream, {t: 'pizza'}, (error,output) ->
    output.pipe(process.stdout)
  )

[apocas]

Do you want to throw a PR, with an example of this? :)
(/examples/ folder)

[KyleAMathews]

Will do... once tar-fs is actually working mafintosh/tar-fs#3

[apocas]

Any news on this? :)

[apocas]

Done. Example in examples/build/ folder.