Phoenix Framework with Docker

docker-compose.yml

version: '3'
services:
  elixir:
    build: .
    volumes:
      - .:/home/app
    ports:
      - 4000:4000
  postgres:
    image: postgres:10.1-alpine
    volumes:
      - ./docker/postgres/data:/var/lib/postgresql/data
    ports:
      - 5432:5432
    env_file:
      - ./docker/postgres/.env

Dockerfile

FROM elixir:1.6-alpine

RUN mkdir -p /home/app

WORKDIR /home/app

RUN mix archive.install \
    https://github.com/phoenixframework/archives/raw/master/phx_new.ez --force

COPY . ./

RUN mix local.hex --force

RUN mix deps.get --force

RUN mix local.rebar --force

CMD ["mix", "phx.server"]