Docker files for bringing up a LuckyFramework app ... Some of this is redundant.

.dockerignore

.git
.dockerignore
bin/
lib/
spec/

.env

LUCKY_ENV=production
SECRET_KEY_BASE=p9o8Sy1+t3JPuAck9Zc/U9N7fK+KzIjxZWhGlwxdGl4=
DATABASE_URL=postgres://lucky:developer@db:5432/maestro_production
DB_NAME=maestro_production
DB_HOST=db
DB_USERNAME=lucky
DB_PASSWORD=developer
APP_DOMAIN=example.com
PORT=5000

docker-compose.yml

version: '3'
services:
  db:
    container_name: maestro_db
    image: postgres:11.3

    environment:
      - POSTGRES_DB=maestro_production
      - POSTGRES_USER=lucky
      - POSTGRES_PASSWORD=developer
    networks:
      - internal
    ports:
      - 5432:5432
    volumes:
      - data:/var/lib/postgresql/data

  app:
    build: .
    container_name: maestro_app
    command: ["lucky", "db.migrate", "&&", "/app/bin/maestro"]
    environment:
      - LUCKY_ENV=production
      - SECRET_KEY_BASE=p9o8Sy1+t3JPuAck9Zc/U9N7fK+KzIjxZWhGlwxdGl4=
      - DATABASE_URL=postgres://lucky:developer@db:5432/maestro_production
      - DB_NAME=maestro_production
      - DB_HOST=db
      - DB_USERNAME=lucky
      - DB_PASSWORD=developer
      - APP_DOMAIN=example.com
      - PORT=5000
    networks:
      - internal
    ports:
      - 5000:5000
    links:
      - db
    depends_on:
      - db

volumes:
  data:
  nodes:
  shards:

networks:
  internal:    

Dockerfile

FROM crystallang/crystal:0.29.0 as system

RUN apt-get update && \
  apt-get install -y libnss3 libgconf-2-4 chromium-browser build-essential curl libreadline-dev libevent-dev libssl-dev libxml2-dev libyaml-dev libgmp-dev git golang-go postgresql postgresql-contrib locales && \
  # Set up node and yarn
  curl --silent --location https://deb.nodesource.com/setup_11.x | bash - && \
  apt-get install -y nodejs && \
  npm install -g yarn && \
  # Lucky cli
  git clone https://github.com/luckyframework/lucky_cli --branch master --depth 1 /usr/local/lucky_cli && \
  cd /usr/local/lucky_cli && \
  shards install && \
  crystal build src/lucky.cr -o /usr/local/bin/lucky && \
  apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

FROM system as shard-dependencies
WORKDIR /app
COPY shard* /app/
RUN shards install

FROM shard-dependencies as assets-pipeline
WORKDIR /app
COPY package.json .
COPY webpack* .
COPY src/js/ ./src/js/
COPY src/css/ ./src/css/
RUN yarn install
RUN yarn prod
RUN rm -rf /app/node_modules

FROM assets-pipeline as build

WORKDIR /app
COPY . /app

RUN shards build --production