docker-compose for Rails application on Local

rails-docker-compose.md

# docker/webapp/Dockerfile
FROM ruby:2.6.6

SHELL ["/bin/bash", "-c"]
RUN apt-get update -qq && apt-get install -y postgresql-client memcached tzdata nano
# Install node 12, yarn
RUN curl -sL https://deb.nodesource.com/setup_12.x | bash -
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
RUN apt-get update
RUN apt-get install -y yarn nodejs

# Rails app
ENV DIR /var/www/webapp
RUN mkdir -p $DIR
WORKDIR $DIR

COPY Gemfile $DIR/Gemfile
COPY Gemfile.lock $DIR/Gemfile.lock
RUN gem install bundler:2.0.2
RUN bundle install

COPY package.json $DIR/package.json
COPY yarn.lock $DIR/yarn.lock
RUN yarn install --check-files

ARG CACHEBURST=1
ADD . $DIR

# Add a script to be executed every time the container starts.
COPY docker/webapp/entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]
EXPOSE 3000

ENV PATH=./bin:$PATH

# Start the main process.
CMD ["bundle", "exec", "rails", "server", "-b", "0.0.0.0"]

# ./docker-compose.yml
version: '3.8'
services:
  webapp:
    tty: true
    stdin_open: true
    image: chilling.dev:latest
    build:
      context: .
      dockerfile: docker/webapp/Dockerfile
    volumes:
      - ./:/var/www/webapp
      - node-modules:/var/www/webapp/node_modules
      - gems:/usr/local/bundle
    depends_on:
      - postgres
    environment:
      - RAILS_ENV
    ports:
      - 3000:3000

  postgres:
    image: postgres:12.3
    volumes:
      - pg-data:/var/lib/postgresql/data
    ports:
      - 15432:5432
    environment:
      - POSTGRES_USER=chilling.dev
      - POSTGRES_PASSWORD=chilling.dev.hunt#1995

  webpacker:
    image: chilling.dev:latest
    command: ["yarn", "start"]
    volumes:
      - ./:/var/www/webapp
      - node-modules:/var/www/webapp/node_modules
      - gems:/usr/local/bundle
    ports:
      - 3035:3035

  spring:
    image: chilling.dev:latest
    command: ["spring", "server"]
    volumes:
      - ./:/var/www/webapp
      - node-modules:/var/www/webapp/node_modules
      - gems:/usr/local/bundle
    environment:
      - POSTGRES_USER=chilling.dev
      - POSTGRES_PASSWORD=chilling.dev.hunt#1995
      - RAILS_ENV
volumes:
  node-modules:
  gems:
  pg-data: