docker: add a Dockerfile

Currently using SQLite (and exoscale branding).

Dockerfile

@@ -0,0 +1,20 @@
+FROM node:0.10
+
+RUN npm install -g bower grunt-cli
+RUN apt-get -qq update && apt-get install -qq gifsicle libjpeg-progs optipng
+
+COPY . /dashkiosk
+RUN cd /dashkiosk ; npm install
+RUN cd /dashkiosk ; grunt --branding=exoscale
+RUN cd /dashkiosk/dist ; npm install --production
+
+# We use SQLite by default. If you want to keep the database between
+# runs, don't forget to provide a volume for /database.
+VOLUME /database
+
+ENV NODE_ENV production
+ENV port 8080
+ENV db__options__storage /database/dashkiosk.sqlite
+
+ENTRYPOINT [ "node", "/dashkiosk/dist/server.js" ]
+EXPOSE 8080