.dockerignore

​# Git​
.git
.gitignore

​# Logs​
log/*

# Temp files​
tmp/*

# Webpack-related
node_modules

.env.docker

NODE_ENV=development
RAILS_ENV=development
WEBPACKER_DEV_SERVER_HOST=webpack

docker-compose.yml

version: "3"

services:
  webpack:
    build: .
    env_file:
      - '.env.docker'
    command: './bin/webpack-dev-server'
    volumes:
      - '.:/usr/src/app'
    ports:
      - '3035:3035'

  web:
    build: .
    ports:
      - '3000:3000'
    command: 'puma -C config/puma.rb'
    volumes:
      - '.:/usr/src/app'
    env_file:
      - '.env.docker'

Dockerfile

FROM ruby:2.5

RUN apt-get update -qq && apt-get install -yqq build-essential apt-transport-https apt-utils

# for nokogiri
RUN apt-get install -yqq libxml2-dev libxslt1-dev

# node
RUN curl -sL https://deb.nodesource.com/setup_8.x | bash -
RUN apt-get install -y nodejs

# yarn
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 -qq && apt-get install -y yarn

# Clean up APT when done.
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# gems
COPY Gemfile* /usr/src/app/
COPY package.json /usr/src/app/
COPY yarn.lock /usr/src/app/
WORKDIR /usr/src/app

RUN bundle install
RUN yarn install
RUN yarn check --integrity

COPY . /usr/src/app/