docker-compose.yml

web:
  build: .
  environment:
    AWS_ACCESS_KEY_ID: access_key
    AWS_SECRET_ACCESS_KEY: secret_key # both intentionally omittedd
    DEV_AWS_BUCKET_NAME: bucket 
    TEST_AWS_BUCKET_NAME: bucket 
  command: iex -S mix
  stdin_open: true
  tty: true
  volumes:
    - .:/app

Dockerfile

FROM ubuntu:15.04
MAINTAINER Johnny Mejias jmejias17@gmail.com

# Locale setup due to defaults that come from being in PR
RUN locale-gen en_US.UTF-8
ENV LANGUAGE en_US.UTF-8
ENV LANG en_US.UTF-8
ENV LC_ALL en_US.UTF-8

RUN apt-get update && \
    apt-get -y install wget curl

RUN echo "deb http://packages.erlang-solutions.com/ubuntu vivid contrib" >> /etc/apt/sources.list

RUN mkdir /Downloads
WORKDIR /Downloads

RUN wget http://packages.erlang-solutions.com/ubuntu/erlang_solutions.asc
RUN apt-key add erlang_solutions.asc
RUN apt-get update && \
    apt-get -y install git && \
    apt-get -y install erlang && \
    apt-get -y install erlang-base-hipe && \
    apt-get -y install elixir && \
    mkdir /app

COPY mix.exs /app/mix.exs

WORKDIR /app

RUN mix local.hex --force && \
    mix local.rebar --force

RUN mix do deps.get, compile

Makefile

.PHONY: pull up start all

all:
	@echo "Commands to build access terminal using docker-compose"
	@echo "Plain commands default to dev environment"
	@echo "make build"
	@echo "make up"
	@echo "make console"
	@echo "make test"

build:
	docker-compose build

up:
	docker-compose up

console:
	docker-compose run --rm web iex -S mix

run-tests:
	docker-compose run --rm web mix test

mix.exs

defmodule AccessUpload.Mixfile do
  use Mix.Project

  def project do
    [app: :access_upload,
     version: "0.0.1",
     elixir: "~> 1.0",
     build_embedded: Mix.env == :prod,
     start_permanent: Mix.env == :prod,
     deps: deps]
  end

  def application do
    [applications: [:logger, :ssl, :erlcloud, :httpoison],
     mod: {AccessUpload, []}]
  end

  defp deps do
    [
      {:erlcloud, git: "https://github.com/gleber/erlcloud"},
      {:httpoison, "~> 0.7.2"},
      {:poison, "~> 1.5"}
    ]
  end
end