Dockerfiles for building and pushing CORD ONOS apps

Change-Id: I8bcb39f6db6d1075a404ea869b7b0cf0af4f40c3
diff --git a/containers/cord-apps/Dockerfile.vtn b/containers/cord-apps/Dockerfile.vtn
new file mode 100644
index 0000000..2091da6
--- /dev/null
+++ b/containers/cord-apps/Dockerfile.vtn
@@ -0,0 +1,8 @@
+FROM xosproject/cord-app-build
+MAINTAINER Andy Bavier <andy@onlab.us>
+
+WORKDIR /src
+RUN     git clone https://gerrit.opencord.org/p/vtn.git && cd vtn && \
+        mvn clean install
+
+CMD bash -c "source /root/.bashrc; onos-app onos-cord-1 install /src/vtn/target/vtn-1.0-SNAPSHOT.oar && onos-app onos-cord-1 activate org.opencord.vtn"