fix rake shell and add rake server

* move spec docker things into spec/support/docker/
* rake shell now copies src files into /app/ and generates nginx.conf
* rake server[fixture] will now boot an nginx server locally

Rakefile

@@ -6,5 +6,26 @@ task :shell, [:fixture] do |t, args|
   include PathHelper
   BuildpackBuilder.new(@debug)
   fixture_path    = File.expand_path(fixtures_path(args[:fixture]))
-  system("docker run -i -v #{fixture_path}:/src -t #{BuildpackBuilder::TAG} \"bash\"")
+  cmd = %Q{docker run -i -v #{fixture_path}:/src -t #{BuildpackBuilder::TAG} /bin/bash -c "/app/bin/config/make-config && bash"}
+  puts cmd
+  system cmd
+end
+
+task :server, [:fixture] do |t, args|
+  require_relative "spec/support/buildpack_builder"
+  require_relative "spec/support/app_runner"
+
+  debug       = true
+  thread_name = :app_thread
+
+  Signal.trap("INT") do
+    Thread.list.detect {|thread| thread[:name] == thread_name }.wakeup
+  end
+
+  BuildpackBuilder.new(debug)
+  app = AppRunner.new(args[:fixture], {}, debug)
+  app.run do
+    Thread.current[:name] = thread_name
+    Thread.stop
+  end
 end

spec/support/buildpack_builder.rb

@@ -24,6 +24,6 @@ class BuildpackBuilder
         -> (chunk) { nil }
       end
 
-    Docker::Image.build_from_dir(buildpack_path.to_s, 't' => TAG, 'rm' => true, &print_output)
+    Docker::Image.build_from_dir(buildpack_path.to_s, 't' => TAG, 'rm' => true, 'dockerfile' => "spec/support/docker/Dockerfile", &print_output)
   end
 end

spec/support/docker/Dockerfile

@@ -13,3 +13,6 @@ ENV PORT 3000
 EXPOSE 3000
 
 WORKDIR /app
+
+COPY ./spec/support/docker/init.sh /usr/bin/init.sh
+ENTRYPOINT ["/usr/bin/init.sh"]

spec/support/docker/init.sh

+#!/bin/bash
+
+cp -rf /src/* /app/
+
+exec "$@"