From dc406614dceb8439774c0834a89099fa3dadc816 Mon Sep 17 00:00:00 2001
From: Sirish Bathina <sirish@kasten.io>
Date: Mon, 2 Dec 2024 14:25:19 -1000
Subject: [PATCH] Multi-platform kubestr image (#316)

* multi-platform kubestr image

* Adjusting Dockerfile to do a native compile + emulated image build

* remove explicit TARGETPLATFORM
---
 .github/workflows/docker-publish.yml |  1 +
 Dockerfile                           | 15 ++++++++++-----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 261318e..874654b 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -61,6 +61,7 @@ jobs:
       - name: Build and push Docker image
         uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
         with:
+          platforms: linux/amd64,linux/arm64,linux/ppc64le
           context: .
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
diff --git a/Dockerfile b/Dockerfile
index da4344c..9cffecf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,15 @@
-FROM golang:1.22-bullseye AS builder
+ARG BUILDPLATFROM
+
+FROM --platform=$BUILDPLATFORM golang:1.22-bookworm AS builder
+
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETPLATFROM
 
 ENV GO111MODULE=on \
     CGO_ENABLED=0 \
-    GOOS=linux \
-    GOARCH=amd64 \
-    GOBIN=/dist
+    GOOS=${TARGETOS} \
+    GOARCH=${TARGETARCH} 
 
 WORKDIR /app
 
@@ -15,7 +20,7 @@ RUN go mod download
 
 COPY . .
 
-RUN go install -ldflags="-w -s" .
+RUN go build -o /dist/kubestr -ldflags="-w -s" .
 
 FROM alpine:3.19