Ergonomic, hermetic, user-friendly software build system for Python, Go, Java, Kotlin, Protobuf, Scala, Shell. Pants lets you fearlessly scale up your codebase!

Pants

Something is amiss... With the following:
```docker_image(
    name="special-img",
    dependencies = [":large_files_dep"],
    repository = "special",
    image_tags=["thingy"],
    registries=["local"],
    instructions=[
        "FROM ubuntu:20.04",
        "COPY large_dir /usr/bin/app/place",
    ]
)```
The directory in question is mutli-GB, 100k+ files.

If I crack open the sandbox and build it, it takes seconds, but building it via Pants takes  _at least 5 minutes_ (I killed it at 300s)

Also the target is a single tar file I unzip in the sandbox with a plugin. So I doubt it has to do with pants trying to cache/hash things

Enabling build kit via `env_vars = ["DOCKER_BUILDKIT=1"]`  fixed it

I assumed it used buildkit by default :see_no_evil:

Ah, maybe should be an option for that..? Or just default to enabled unless provided otherwise..

I dunno enough to know if thats kosher :man-shrugging: