Open-O's Packer configuration is divided into build-specific variables,
output-specific templates and a set of shared provisioning scripts. To do a
specific build, combine the template for the desired output artifact type with
-a variable file. To build a new basebuild instance the following would be done:
+a variable file. To build a new builder instance the following would be done:
```
-packer build -var-file=vars/cloud-env.json -var-file=vars/centos.json templates/basebuild.json
+packer build -var-file=vars/cloud-env.json -var-file=vars/centos.json templates/builder.json
```
**NOTE:** vars/cloud-env.json is a gitignored file as it contains private