dockerfile_of_spec x produces a Dockerfile that aims to be equivalent to x.

However, note that:

• In "(copy (excludes ...) ...)" the excludes part is ignored. You will need to ensure you have a suitable ".dockerignore" file.
• The conversion is not robust against malicious input, as the escaping rules are unclear.

• parameter buildkit

  If true, the extended BuildKit syntax is used to support caches. If false, caches are ignored.