+Alternatively, you can create an image in OpenStack using Packer and then specify
+the image to be used as a parameter to createrapid.py. First step is to upload an
+existing CentOs cloud image from the internet into OpenStack.
+Check out: https://cloud.centos.org/centos/7/images/
+You should now source the proper .rc file so Packer can connect to your OpenStack.
+There are 2 files: centos.json and deploycentos.sh, allowing you to create
+an image automatically. Run
+ # packer build centos.json
+Note that this procedure is not only installing the necessary tools to run PROX,
+but also does some system optimizations (tuned).
+
+Now that the image exists in OpenStack, source the openrc file of the OpenStack
+environment so that the OpenStack CLI commands can be run: