Use cross-compilation

Dockerfile

@@ -6,51 +6,69 @@ ARG BCI_IMAGE=registry.suse.com/bci/bci-base
 ARG HARDENED_IMAGE=rancher/hardened-build-base:${GOBORING_VERSION}
 ARG ARCH
 
-FROM ${HARDENED_IMAGE} as base
+# Image that provides cross compilation tooling.
+FROM --platform=$BUILDPLATFORM rancher/mirrored-tonistiigi-xx:1.3.0 as xx
+
+
+FROM --platform=$BUILDPLATFORM ${HARDENED_IMAGE} as base
 ARG TAG
 ARG BUILD
 ENV VERSION_OVERRIDE=${TAG}${BUILD}
-RUN git clone https://github.com/k8snetworkplumbingwg/sriov-network-operator && \
-    cd sriov-network-operator && \
-    git checkout ${COMMIT} && \
-    make clean
+# copy xx scripts to your build stage
+COPY --from=xx / /
+RUN apk add file make git clang lld
+ARG TARGETPLATFORM
+# setup required packages
+RUN set -x && \
+    xx-apk --no-cache add musl-dev gcc lld 
 
 FROM base as builder
 ENV CGO_ENABLED=0
 ARG TAG
 ARG BUILD
 ENV VERSION_OVERRIDE=${TAG}${BUILD}
 ENV GOFLAGS=-trimpath
-RUN cd sriov-network-operator && \
+RUN git clone https://github.com/k8snetworkplumbingwg/sriov-network-operator && \
+    cd sriov-network-operator && \
+    git checkout ${COMMIT} && \
+    make clean && \
+    go mod download
+
+# cross-compilation setup
+ARG TARGETPLATFORM
+RUN export GOOS=$(xx-info os) &&\
+    export GOARCH=$(xx-info arch) &&\
+    export ARCH=$(xx-info arch) &&\
+    cd sriov-network-operator && \
     make _build-manager && \
     make _build-webhook && \
     make _build-sriov-network-config-daemon
+RUN mv /go/sriov-network-operator/build/_output/linux/$(xx-info arch)/sriov-network-config-daemon /usr/bin/ && \
+    mv /go/sriov-network-operator/build/_output/linux/$(xx-info arch)/webhook /usr/bin/webhook && \
+    mv /go/sriov-network-operator/build/_output/linux/$(xx-info arch)/manager /usr/bin/sriov-network-operator
 
 # Create the config daemon image
 FROM ${BCI_IMAGE} as config-daemon
-ARG ARCH
 WORKDIR /
 COPY centos.repo /etc/yum.repos.d/centos.repo
 RUN zypper update -y && \
     ARCH_DEP_PKGS=$(if [ "$(uname -m)" != "s390x" ]; then echo -n mstflint ; fi) && \
     zypper install -y hwdata $ARCH_DEP_PKGS
-COPY --from=builder /go/sriov-network-operator/build/_output/linux/${ARCH}/sriov-network-config-daemon /usr/bin/
+COPY --from=builder /usr/bin/sriov-network-config-daemon /usr/bin/
 COPY --from=builder /go/sriov-network-operator/bindata /bindata
 ENTRYPOINT ["/usr/bin/sriov-network-config-daemon"]
 
 # Create the webhook image
 FROM ${BCI_IMAGE} as webhook
-ARG ARCH
 WORKDIR /
 LABEL io.k8s.display-name="sriov-network-webhook" \
       io.k8s.description="This is an admission controller webhook that mutates and validates customer resources of sriov network operator."
-COPY --from=builder /go/sriov-network-operator/build/_output/linux/${ARCH}/webhook /usr/bin/webhook
+COPY --from=builder /usr/bin/webhook /usr/bin/webhook
 CMD ["/usr/bin/webhook"]
 
 # Create the operator image
 FROM ${BCI_IMAGE} as operator
-ARG ARCH
 WORKDIR /
-COPY --from=builder /go/sriov-network-operator/build/_output/linux/${ARCH}/manager /usr/bin/sriov-network-operator
+COPY --from=builder /usr/bin/sriov-network-operator /usr/bin/sriov-network-operator
 COPY --from=builder /go/sriov-network-operator/bindata /bindata
 ENTRYPOINT ["/usr/bin/sriov-network-operator"]

Makefile

@@ -29,7 +29,6 @@ image-build-operator:
 		--load \
 		--platform=$(ARCH) \
 		--pull \
-		--build-arg ARCH=$(ARCH) \
 		--build-arg TAG=$(TAG:$(BUILD_META)=) \
 		--build-arg BUILD=$(BUILD_META) \
 		--target operator \
@@ -50,7 +49,6 @@ image-build-network-config-daemon:
 	docker buildx build \
 		--pull \
 		--platform=$(ARCH) \
-		--build-arg ARCH=$(ARCH) \
 		--build-arg TAG=$(TAG:$(BUILD_META)=) \
 		--build-arg BUILD=$(BUILD_META) \
 		--target config-daemon \
@@ -71,7 +69,6 @@ image-build-sriov-network-webhook:
 	docker buildx build \
 		--pull \
 		--platform=$(ARCH) \
-		--build-arg ARCH=$(ARCH) \
 		--build-arg TAG=$(TAG:$(BUILD_META)=) \
 		--build-arg BUILD=$(BUILD_META) \
 		--target webhook \