From 4b6e0b116c4ac9b888150e60dc3857b478dc2ae1 Mon Sep 17 00:00:00 2001
From: Melora Hugues <dev@faercol.me>
Date: Sun, 29 Jan 2023 18:19:54 +0100
Subject: [PATCH] Add multi-architecture support

Update the Dockerfile in order to be able to generate containers for
several architectures (amd64 and arm64 for instance) using buildx.
---
 Dockerfile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index d83665f..0e1db1b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,12 @@
-FROM golang:1.19 AS builder
+FROM --platform=$TARGETPLATFORM golang:1.19 AS builder
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
 WORKDIR /go/src/git.faercol.me/public-ip-tracker/
 COPY tracker ./
 RUN CGO_ENABLED=0 make build
 
 # Replace with from scratch later on
-FROM alpine:latest
+FROM --platform=$TARGETPLATFORM alpine:latest
 WORKDIR /root
 COPY --from=builder go/src/git.faercol.me/public-ip-tracker/build/tracker ./