Multiple levels of include

[barcode]

I really like the INCLUDE+ instruction, since it allows to avoid code duplication.
The only problem I encountered was using multiple levels of INCLUDE+ (i.e. including a file using INCLUDE+ as well).

Not sure if i am doing something wrong, there is a limitation or it just is not implemented.
I think it is just not considered in the implementation (i.e. missing recursive call on the included file) but i could be wrong, since i do not know rust.

My files look like this:

Dockerfile.A:

# syntax = edrevo/dockerfile-plus
FROM alpine
RUN echo ">A"
INCLUDE+ Dockerfile.A2
RUN echo "<A"

Dockerfile.A2:

# syntax = edrevo/dockerfile-plus
RUN echo ">A2"
INCLUDE+ Dockerfile.A3
RUN echo "<A2"

Dockerfile.A3:

# syntax = edrevo/dockerfile-plus
RUN echo ">A3"
RUN echo "<A3"

Here you can find the files: https://gitlab.com/barcode/test/-/tree/ci/multi_level_include

The build output is here: https://gitlab.com/barcode/test/-/jobs/1214501093

So is this a problem with my files or is it something else?