From 2e2205d938ba70e573a4bc1269e60af57a9347ab Mon Sep 17 00:00:00 2001
From: Pieter Hollander <git@pieterhollander.nl>
Date: Sat, 10 Aug 2024 23:44:45 +0200
Subject: [PATCH] Add ARG TARGETOS TARGETARCH to fix multi-platform builds.

---
 Dockerfile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 0746151..064c362 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,9 @@ RUN go mod download
 COPY . .
 
 # Build the application for the specified target architecture
+# https://www.docker.com/blog/faster-multi-platform-builds-dockerfile-cross-compilation-guide/
+# Declare TARGETOS and TARGETARCH in the local scope so they can be used in the build stage.
+ARG TARGETOS TARGETARCH
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -o p1-logger .
 
 # Create a minimal runtime image