Docker Deployment files for Rails with Solr

.dockerignore

# Ignore bundler config.
/.bundle

# Ignore the default SQLite database.
/db/*.sqlite
/db/*.sqlite-journal

# Ignore all logfiles and tempfiles.
/log/*
/tmp/*
!/log/.keep
!/tmp/.keep

/node_modules
/yarn-error.log

.byebug_history
/public/packs
/public/assets
/public/packs-test
/node_modules

/solr

.env

REDIS_URL=redis://redis:6379/
DB_USERNAME=postgres
DB_PASSWORD=password
RAILS_ENV=production
NODE_ENV=production
SECRET_KEY_BASE=
SMTP_ADDRESS=
SMTP_USERNAME=
SMTP_PASSWORD=
VIRTUAL_HOST=
RAILS_SERVE_STATIC_FILES=true

.gemrc

gem: --no-rdoc --no-ri

docker-compose.yml

version: '3'
services:
  web:
    build: .
    ports:
      - "3000:3000"
    dns: "8.8.8.8"
    volumes:
      - ".:/app"
    env_file: .env
    links:
      - db:db
      - solr:solr
      # In production instead add external_links for db
    command: bash -c "bin/rake assets:precompile && bin/rake db:create && bin/rake db:migrate && bin/rails s" 

  # In production remove this and add an external link in web
  db:
    image: postgres:latest
    environment:
      - POSTGRES_PASSWORD=password
    volumes:
      - ./database:/var/lib/postgresql
  solr:
    image: solr:7.0.1
    ports:
      - "8983:8983"
    volumes:
      - data:/opt/solr/server/solr/mycores
    entrypoint:
      - docker-entrypoint.sh
      - solr-precreate
      - mycore
    links:
      - db:db
volumes:
  data: {}

Dockerfile

FROM ruby:2.4-alpine

RUN apk --update add --virtual\
  build-dependencies build-base libev libev-dev postgresql-dev nodejs bash\
  tzdata sqlite-dev git curl 

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

# for yarn

RUN npm install -g yarn 
WORKDIR /app
ADD .gemrc /app
ADD Gemfile /app/
ADD Gemfile.lock /app/

ENV RAILS_ENV=development
ENV NODE_ENV=development

RUN bundle install --jobs 8

ADD package.json /app/

RUN yarn install

ADD . /app

RUN rake db:create && rake db:migrate

EXPOSE 3000

CMD ["bundle", "exec", "rails", "s"]