Rails 5.2.1 + Ruby 2.5.3

docker-compose.yml

version: "3"
services:
  web:
    build: .
    ports:
      - "3000:3000"
    depends_on:
      - db
    environment:
      RAILS_ENV: development
      DATABASE_URL: postgres://postgres:secret@db:5432/grobat_development
      YARN_INTEGRITY_ENABLED: "false"
    volumes:
      - .:/usr/src/app
    command: bundle exec rails s -b 0.0.0.0 -p 3000
  db:
    image: postgres:10.5-alpine
    ports:
    - "5432:5432"
    volumes:
      - dbdata:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: secret
      POSTGRES_DB: grobat_development
  adminer:
    image: adminer
    restart: always
    ports:
      - "8080:8080"
    environment:
      ADMINER_PLUGINS: "dump-json"
volumes:
  dbdata:

Dockerfile

FROM ruby:2.5.3

# Make nodejs and yarn as dependencies
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN curl -sL https://deb.nodesource.com/setup_8.x | bash
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list

# Install dependencies and perform clean-up
RUN apt-get update -qq && apt-get install -y \
   build-essential \
   nodejs \
   yarn \
 && apt-get -q clean \
 && rm -rf /var/lib/apt/lists

WORKDIR /usr/src/app
ENV RAILS_ENV development

# Installing Ruby dependencies
COPY Gemfile* ./
RUN gem install bundler
RUN bundle install --jobs 20 --retry 5