Docker compose para Rails com Webpacker, Sidekiq e Redis

docker-compose.yml

version: "3.7"

services:
  redis:
    env_file: .env
    image: 'redis:4.0-alpine'
    command: redis-server
    ports:
      - '6379:6379'
    volumes:
      - 'redis:/var/lib/redis/data'
  
  sidekiq:
    env_file: .env
    image: myimg
    command: "bundle exec sidekiq -q reports -e production"
    depends_on:
      - redis

  app:
    env_file: .env
    image: myimg
    command: bash producao.sh
    ports:
      - "3000:80"
      - "2222:2222"
    depends_on:
      - "redis"
    tty: true
    stdin_open: true

volumes:
  redis:
    
networks:
  default:
    ipam:
      driver: default
      config:
        - subnet: 172.21.0.0/16

Dockerfile

FROM ruby:2.5.5

RUN apt-get update && \
    apt-get install -yqq apt-transport-https ca-certificates build-essential libpq-dev --fix-missing --no-install-recommends
RUN 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 && \
     curl -sL https://deb.nodesource.com/setup_11.x | bash -
RUN apt-get update && \
    apt-get install -yqq nodejs yarn

RUN apt-get update && \
    apt-get install -yqq openssh-client openssh-server

RUN echo "root:Docker!" | chpasswd 

ENV app /app/myapp/current

WORKDIR $app

COPY Gemfile Gemfile.lock ./
RUN gem install bundler -v 2.0.2
RUN bundle install

COPY package.json yarn.lock ./
RUN set -ex; \
  yarn install --frozen-lockfile --production; \
  yarn cache clean;

COPY . .
COPY sshd_config /etc/ssh/

EXPOSE 80 2222