Added a build for the portainer docker container. Portainer is a web ui
that simplifies monitoring and operations on Docker containers. The
build process moves the root of the UI to make it easier to integrate
later into a web UI consolidation to a single port through a prox
server. Portainer can currently be accessed at port 9000 of the docker
host.

Change-Id: I44d38846ac820e17e1854389613b75253782d8f2
diff --git a/compose/docker-compose-system-test.yml b/compose/docker-compose-system-test.yml
index 88d2591..2d9f338 100644
--- a/compose/docker-compose-system-test.yml
+++ b/compose/docker-compose-system-test.yml
@@ -242,6 +242,21 @@
     volumes:
     - "/var/run/docker.sock:/tmp/docker.sock"
 
+  #
+  # Docker ui
+  #
+  portainer:
+    image: voltha/portainer
+    ports:
+    - "9000:9000"
+    environment:
+      CONSUL_ADDR: "${DOCKER_HOST_IP}:8500"
+    depends_on:
+    - nginx
+    restart: unless-stopped
+    volumes:
+    - "/var/run/docker.sock:/var/run/docker.sock"
+
 networks:
   default:
     driver: bridge