Merge pull request #44 from cagataygurturk/multi-arch

Multi-arch Docker image

Dockerfile

@@ -1,14 +1,14 @@
 # go1.22.2 linux/amd64
-FROM docker.io/golang@sha256:d5302d40dc5fbbf38ec472d1848a9d2391a13f93293a6a5b0b87c99dc0eaa6ae as build
+FROM --platform=$BUILDPLATFORM docker.io/golang@sha256:d5302d40dc5fbbf38ec472d1848a9d2391a13f93293a6a5b0b87c99dc0eaa6ae as build
 
 WORKDIR /go/src/app
 COPY . .
 RUN go mod download
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -buildvcs=false  -o /go/bin/gce_metadata_server cmd/main.go 
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -buildvcs=false  -o /go/bin/gce_metadata_server cmd/main.go 
 RUN chown root:root /go/bin/gce_metadata_server
 
 # base-debian11-root
 FROM gcr.io/distroless/base@sha256:b31a6e02605827e77b7ebb82a0ac9669ec51091edd62c2c076175e05556f4ab9
 COPY --from=build /go/bin/gce_metadata_server /gce_metadata_server
 EXPOSE 8080
-ENTRYPOINT [ "/gce_metadata_server" ]
+ENTRYPOINT [ "/gce_metadata_server" ]