Added basic support for Docker and Fig

Dockerfile

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+FROM ruby:2.2.0
+
+RUN apt-get update -qq && apt-get install -y build-essential libpq-dev
+
+RUN mkdir /var/www
+WORKDIR /var/www
+
+ADD Gemfile /var/www/Gemfile
+ADD Gemfile.lock /var/www/Gemfile.lock
+RUN bundle install
+
+ADD . /var/www

config/database/docker.example.yml

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+# PostgreSQL. Versions 8.2 and up are supported.
+#
+# Install the pg driver:
+#   gem install pg
+# On OS X with Homebrew:
+#   gem install pg -- --with-pg-config=/usr/local/bin/pg_config
+# On OS X with MacPorts:
+#   gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config
+# On Windows:
+#   gem install pg
+#       Choose the win32 build.
+#       Install PostgreSQL and put its /bin directory on your path.
+#
+# Configure Using Gemfile
+# gem 'pg'
+#
+development:
+  adapter: postgresql
+  encoding: unicode
+  database: zangetsu_development
+  pool: 5
+  username: postgres
+  password:
+  host: db
+
+  # Connect on a TCP socket. Omitted by default since the client uses a
+  # domain socket that doesn't need configuration. Windows does not have
+  # domain sockets, so uncomment these lines.
+  #host: localhost
+
+  # The TCP port the server listens on. Defaults to 5432.
+  # If your server runs on a different port number, change accordingly.
+  #port: 5432
+
+  # Schema search path. The server defaults to $user,public
+  #schema_search_path: myapp,sharedapp,public
+
+  # Minimum log levels, in increasing order:
+  #   debug5, debug4, debug3, debug2, debug1,
+  #   log, notice, warning, error, fatal, and panic
+  # Defaults to warning.
+  #min_messages: notice
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test:
+  adapter: postgresql
+  encoding: unicode
+  database: zangetsu_test
+  pool: 5
+  username: postgres
+  password:
+  host: db
+
+production:
+  adapter: postgresql
+  encoding: unicode
+  database: zangetsu_production
+  pool: 5
+  username: postgres
+  password:
+  host: db

fig.yml

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+db:
+  image: postgres:9.3
+  ports:
+    - "5432"
+web:
+  build: .
+  command: bundle exec foreman start web
+  volumes:
+    - .:/var/www
+  ports:
+    - "5000:5000"
+  links:
+    - db