A buildpackage configuration schema is as follows:
The buildpack to package. It must contain the following field:
A set of dependent buildpack locations, for packaging a meta-buildpack. Each dependent buildpack location must correspond to an order group within the meta-buildpack being packaged, and must have one of the following fields:
.cnbfile), or a directory. If path is relative, it must be relative to the
The expected runtime environment for the buildpackage. It should contain the following field:
windowsis supported. If omitted,
linuxwill be the default.
You can view sample buildpackages on Github.