docker-compose.yml

version: '2'
services:
  solr:
    build: /Users/mauriciofidalgo/projects/solr/classificados
    command: java -jar /var/lib/solr/start.jar
    ports:
      - "8951:8951"
  # db:
  #   image: postgres
  
  web:
    build: .
    command: bundle exec rails s -p 3005 -b '0.0.0.0'
    environment:
      - SOLR_URL=http://solr:8951/solr/
    volumes:
      - .:/myapp
    volumes_from:
      - box
    ports:
      - "3005:3005"
    links:
      - solr:solr
    depends_on:
      # - db
      - solr

  box:
    image: busybox
    volumes:
      - /box

docker-compose.yml - solr

FROM openjdk:7
COPY . /var/lib/solr
WORKDIR /var/lib/solr

Dockerfile

FROM ruby:2.3.1
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
RUN mkdir /myapp
WORKDIR /myapp
ADD Gemfile /myapp/Gemfile
ADD Gemfile.lock /myapp/Gemfile.lock
ENV BUNDLE_PATH /box
RUN echo "Execute the bundle install on the web container with docker-compose run web bundle install"
ADD . /myapp