Elixir/Phoenix docker-compose setup

README.md

Elixir project docker setup for development

$> docker-compose run api mix new . --app <my_app>

# if building a phoenix app:
$> docker-compose run api mix ecto.create
$> docker-compose run api env MIX_ENV=test mix ecto.create

docker-compose.yml

version: "3"
services:
  db:
    image: postgres:9.6-alpine
  api:
    build: .
    command: mix phx.server
    volumes:
      - .:/app
    ports:
      - "4000:4000"
    depends_on:
      - db

Dockerfile Elixir

FROM elixir:1.5.3-alpine

WORKDIR /app
ADD . /app

# Install hex & rebar
RUN mix local.hex --force && \
    mix local.rebar --force && \
    mix hex.info

EXPOSE 4000

# Intall phoenix
ENV PHOENIX_VERSION=1.3.0
RUN mix archive.install --force https://github.com/phoenixframework/archives/raw/master/phx_new-${PHOENIX_VERSION}.ez