first pass at dockerfile support

tests/apps/dockerfile/Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:trusty
+ENV LC_ALL C
+ENV DEBIAN_FRONTEND noninteractive
+ENV DEBCONF_NONINTERACTIVE_SEEN true
+EXPOSE 5000
+
+ADD . /app
+RUN apt-get install -y software-properties-common && add-apt-repository ppa:chris-lea/node.js && apt-get update
+RUN apt-get install -y build-essential curl postgresql-client-9.3 nodejs git
+RUN cd /app && npm install
+CMD cd /app && npm start