Using INCLUDE+ with parametrized builds

[nyurik]

Hi, would it be possible to use INCLUDE+ with parameterized builds? PostGIS repo uses this approach, where several basic templates are used with bash param substitution to build many different images. In an ideal case, there would be a simple dockerfile that sets up a few ARG/ENV parameters before importing a common file. Also, are there any limitations to the INCLUDE+, e.g. with multi-stage builds, etc?

Thanks for an awesome extension, sad that upstream hasn't resolved these types of use cases despite user's requests.

[barcode]

In my experiments this works (well env stays on default during build)
You can see this here and here.