Microservices Development Cookbook

How to do it...

1. In the root directory of your Rails application, create a single file called Dockerfile with the following contents:

  FROM ruby:2.3.3  RUN apt-get update -qq && apt-get install -y build-essential   libpq-dev nodejs
  RUN mkdir /pichat
  WORKDIR /pichat
  ADD Gemfile /pichat/Gemfile
  ADD Gemfile.lock /pichat/Gemfile.lock
  RUN bundle install
  ADD . /pichat

2. Create a file called docker-compose.yml with the following contents:

version: '3'services:  db:    image: mysql:5.6.34    ports:      - "3306:3306"    environment:      MYSQL_ROOT_PASSWORD: root  app:    build: .    environment:      RAILS_ENV: development    command: bundle exec rails s -p 3000 -b '0.0.0.0'    volumes:      - .:/pichat    ports:      - "3000:3000"    depends_on:      - db

3. Start your application by running the docker-compose ...