diff --git a/Dockerfile b/Dockerfile
index 89207ed..4e6bb68 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.22 as builder
+FROM --platform=$BUILDPLATFORM golang:1.22 as builder
 
 WORKDIR /app
 
@@ -14,7 +14,9 @@ COPY ./templates ./templates
 COPY embed.go embed.go
 
 RUN go generate ./...
-RUN --mount=type=cache,mode=0777,target=/go/pkg/mod CGO_ENABLED=0 go build -tags timetzdata -o /tstor ./cmd/tstor/main.go 
+
+ARG TARGETOS TARGETARCH
+RUN --mount=type=cache,mode=0777,target=/go/pkg/mod CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -tags timetzdata -o /tstor ./cmd/tstor/main.go 
 
 
 FROM scratch