docker notes

gistfile1.txt

# Dockerfile
FROM ruby:2.6.3
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs postgresql-client-11 graphviz &&\
  curl -sL https://deb.nodesource.com/setup_10.x | bash - && \
  curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
  echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
  apt-get update && apt-get install -y nodejs yarn
RUN mkdir /app
WORKDIR /app
ADD Gemfile /app/Gemfile
ADD Gemfile.lock /app/Gemfile.lock
RUN echo 'gem: --no-rdoc --no-ri' >> "$HOME/.gemrc"
RUN gem install bundler
RUN bundle install
ADD . /app

# docker-compose.yml
version: '2'
services:
  db:
    image: postgres:11.10
    container_name: project_name_db
    restart: always
    volumes:
      - project_name_data:/var/lib/postgresql/data
    environment:
      POSTGRES_USER: root
      POSTGRES_PASSWORD: password
      POSTGRES_DBNAME: project_name_db_development
    ports:
      - "5433:5432"
  app:
    build: .
    container_name: project_name_web
    stdin_open: true
    tty: true
    command: bundle exec rails s -p 3000 -b '0.0.0.0'
    volumes:
      - ".:/app"
    ports:
      - "3001:3000"
    depends_on:
      - db
    links:
      - db
    environment:
      DB_USER: root
      DB_PASSWORD: password
      DB_NAME: project_name_db_development
      DB_HOST: db
      RAILS_ENV: development
volumes:
  project_name_data: