[:octopus:] Files required to Aptible-ize a Heroku-conformant Rails app

.aptible.yml

before_release:
 - bundle exec rake db:migrate

database.yml.example

# The following snippet can go beneath your :development and :test declarations

<% if Rails.env.production? && ENV['DATABASE_URL'] %>
  <%
  require 'cgi'
  require 'uri'

  # Parse parameters out of ENV['DATABASE_URL']
  uri = URI.parse(ENV['DATABASE_URL'])
  database = (uri.path || '').split('/')[1]
  username = uri.user
  password = uri.password
  host = uri.host
  port = uri.port
  %>
<% end %>

production:
  adapter: postgresql
  database: <%= database %>
  username: <%= username %>
  password: "<%= password %>"
  host: <%= host %>
  port: <%= port %>

Dockerfile.nodejs

FROM quay.io/aptible/nodejs:v0.12.x

ADD . /app
WORKDIR /app
RUN npm install
RUN bower install

ENV PORT 3000
EXPOSE 3000

CMD node server.js -p $PORT

Dockerfile.rails

# Standard Rails Dockerfile, used for production deployments
# It lives in `Dockerfile` at the root of your Rails repository

FROM quay.io/aptible/ruby:ruby-2.0.0

# System prerequisites
RUN apt-get update && apt-get -y install libpq-dev nodejs

ADD . /opt/rails
WORKDIR /opt/rails
RUN bundle install --without development test
RUN cp config/database.yml.example config/database.yml
RUN bundle exec rake assets:precompile

ENV PORT 3000
EXPOSE 3000

CMD bundle exec rails s -p $PORT

Dockerfile.staging

# This is a non-standard Dockerfile, which packages a PostgreSQL database in
# the same container as the Rails app. It could be used to simplify staging
# deployments, or to test a production-like environment in a local Docker
# environment

FROM quay.io/aptible/ruby:ruby-2.0.0

# Install PostgreSQL 9.3.x from official Debian sources
RUN echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" >> \
      /etc/apt/sources.list.d/pgdg.list && \
    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys \
      B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8 && \
    apt-get update && \
    apt-get -y install python-software-properties software-properties-common \
      postgresql-9.3 postgresql-client-9.3 postgresql-contrib-9.3
ENV DATABASE_URL postgres://aptible:password@localhost:5432/db

# System prerequisites
RUN apt-get update && apt-get -y install libpq-dev

ADD . /opt/rails
WORKDIR /opt/rails
RUN bundle install --without development test

# Force a production environment here for testing purposes, but this may also
# be set via external environment (aptible config)
ENV RAILS_ENV production

ENV PORT 3000
EXPOSE 3000

# We need to:
#   * Start PostgreSQL
#   * Create the database and run migrations
#   * Start the Rails server
CMD service postgresql start && sudo -u postgres psql --command \
    "CREATE USER aptible WITH SUPERUSER PASSWORD 'password';" && \
    sudo -u postgres psql --command "CREATE DATABASE db;" && \
    bundle exec rake db:migrate; bundle exec rails s -p $PORT