update descriptor-packages build process

Change-Id: I937d0897a051b655f9de87f49a88610a37c9297e
Signed-off-by: Mike Marchetti <mmarchetti@sandvine.com>
diff --git a/juju-charms/Dockerfile b/juju-charms/Dockerfile
new file mode 100644
index 0000000..36248e2
--- /dev/null
+++ b/juju-charms/Dockerfile
@@ -0,0 +1,4 @@
+FROM ubuntu:16.04
+
+RUN  apt-get update && apt install -y charm-tools
+