Refactoring: Copy minikube example

This commit copies Lukas Larsson's (@garazdawi) and Siri Hansen's
(@sirihansen) example from:

https://github.com/erlang/docker-erlang-example/tree/minikube-dist

advanced_examples/minikube-dist/backend/src/backend_app.erl

@@ -0,0 +1,23 @@
+%%
+%% Copyright (C) 2014 Björn-Egil Dahlberg
+%%
+%% File:    dockerwatch_app.erl
+%% Author:  Björn-Egil Dahlberg
+%% Created: 2014-09-10
+%%
+
+-module(backend_app).
+-behaviour(application).
+
+-export([start/2,stop/1]).
+%% API.
+
+start(_Type, _Args) ->
+    mnesia:change_table_copy_type(schema, node(), disc_copies),
+    mnesia:create_table(dockerwatch,
+                        [{disc_copies,[node()]},
+                         {ram_copies,[]}]),
+    {ok, self()}.
+
+stop(_State) ->
+    ok.