From d81d36bccd944d6f2f1edbe6512b509b27a49e5d Mon Sep 17 00:00:00 2001
From: Brian Goff <cpuguy83@gmail.com>
Date: Sun, 4 Feb 2024 22:17:56 +0000
Subject: [PATCH] Passthrough buildkit platform args

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
---
 Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index a435359..b9fc4df 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,9 @@
 ARG GO_VERSION=1.21
 
-FROM golang:${GO_VERSION} AS build
+FROM --platform=${BUILDPLATFORM} golang:${GO_VERSION} AS build
 COPY . /go/src/github.com/cpuguy83/go-md2man
 WORKDIR /go/src/github.com/cpuguy83/go-md2man
+ARG TARGETOS TARGETARCH TARGETVARIANT
 RUN \
     --mount=type=cache,target=/go/pkg/mod \
     --mount=type=cache,target=/root/.cache/go-build \