My Dockerfile looks like this:

# syntax=docker/dockerfile:1.7-labs
FROM mcr.microsoft.com/dotnet/framework/runtime:4.8-windowsservercore-ltsc2019

WORKDIR /app

# other commands

COPY --exclude=bin/big_annoying.dll bin bin

I use Docker Desktop v4.30.0 (149282) for building images on Win 10 through docker compose build that references file above. Buildkit version is v0.13.2.

But I still receive error: Error response from daemon: dockerfile parse error on line 17: unknown flag: exclude.