From 938cdd09a0c29bffffff3cc8a9343966a3f902ef Mon Sep 17 00:00:00 2001
From: Kazuki Suda <kazuki.suda@gmail.com>
Date: Mon, 18 Apr 2022 23:11:56 +0900
Subject: [PATCH] Fix a failure to build arm64 image

---
 .github/workflows/ci.yaml | 2 +-
 Dockerfile                | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e076210..40897f8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,4 +20,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - run: make docker-build
+    - run: make docker-build-all
diff --git a/Dockerfile b/Dockerfile
index cf04c14..eeb027f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # syntax = docker/dockerfile:1
-FROM golang:1.18 AS base
+FROM --platform=$BUILDPLATFORM golang:1.18 AS base
 WORKDIR /workspace
 ENV CGO_ENABLED=0
 COPY go.* .
@@ -31,7 +31,7 @@ RUN --mount=target=. \
 FROM scratch AS export
 COPY --from=build /out/alertmanager-to-github /
 
-FROM gcr.io/distroless/static:nonroot-${TARGETARCH}
+FROM --platform=$BUILDPLATFORM gcr.io/distroless/static:nonroot
 COPY --from=build /out/alertmanager-to-github /
 ENTRYPOINT ["/alertmanager-to-github"]
 CMD ["start"]