adding Dockerfile and puma

.env

@@ -0,0 +1,2 @@
+RACK_ENV=production
+PORT=3000

Dockerfile

@@ -0,0 +1,25 @@
+FROM ubuntu:14.04
+
+# Install packages for building ruby
+RUN apt-get install -y software-properties-common
+RUN apt-add-repository -y ppa:brightbox/ruby-ng
+RUN apt-get update
+RUN apt-get install -y --force-yes build-essential curl wget git
+RUN apt-get install -y --force-yes zlib1g-dev libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt-dev ruby2.1
+RUN apt-get clean
+RUN gem install bundler foreman
+RUN mkdir -p /var/app
+
+# Set environment variables.
+ENV HOME /var/app
+ENV PORT 3000
+ENV RACK_ENV production
+
+# Define working directory.
+WORKDIR /var/app
+
+RUN git clone git@github.com:mcansky/sinatra_hello.git /var/app
+RUN cd /var/app; bundle install
+
+EXPOSE 3000
+CMD ["/usr/local/bin/foreman","start","-d","/var/app"]

Gemfile

@@ -3,3 +3,5 @@ gem 'sinatra'
 gem 'unicorn'
 gem 'capistrano', '2.15.5'
 gem 'haml'
+
+gem 'puma'

Gemfile.lock

@@ -18,6 +18,8 @@ GEM
     net-ssh (2.8.0)
     net-ssh-gateway (1.2.0)
       net-ssh (>= 2.6.5)
+    puma (2.11.1)
+      rack (>= 1.1, < 2.0)
     rack (1.5.2)
     rack-protection (1.5.2)
       rack
@@ -38,5 +40,6 @@ PLATFORMS
 DEPENDENCIES
   capistrano (= 2.15.5)
   haml
+  puma
   sinatra
   unicorn

Procfile

@@ -0,0 +1 @@
+web: bundle exec puma -t 5:5 -p ${PORT:-3000} -e ${RACK_ENV:-development}