Fixes issue with arm64 support. (#404)

* Addresses issue
[#390](#391) by
adding support for multi-architecture container images.

* Removed --platform due to linting rule constraints.

* Removed echo statements due to lint rules.

Signed-off-by: Michael Primeaux <[email protected]>

Dockerfile

@@ -1,6 +1,13 @@
 # Build the manager binary
-ARG ARCH="amd64"
 FROM golang:1.17 as builder
+ARG BUILDOS
+ARG BUILDPLATFORM
+ARG BUILDARCH
+ARG BUILDVARIANT
+ARG TARGETPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETVARIANT
 
 WORKDIR /workspace
 # Copy the Go Modules manifests
@@ -17,11 +24,16 @@ COPY controllers/ controllers/
 COPY k8sutils/ k8sutils/
 
 # Build
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} GO111MODULE=on go build -a -o manager main.go
+ARG LDFLAGS="-s -w"
+ENV GOOS=$TARGETOS
+ENV GOARCH=$TARGETARCH
+ENV CGO_ENABLED=0
+
+RUN GO111MODULE=on go build  -ldflags "${LDFLAGS}" -a -o manager main.go
 
 # Use distroless as minimal base image to package the manager binary
 # Refer to https://github.com/GoogleContainerTools/distroless for more details
-FROM gcr.io/distroless/static:nonroot-${ARCH}
+FROM gcr.io/distroless/static:nonroot
 LABEL maintainer="The Opstree Opensource <[email protected]>"
 WORKDIR /
 COPY --from=builder /workspace/manager .

Makefile

@@ -73,9 +73,12 @@ vet:
 generate: controller-gen
 	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."
 
+docker-create:
+	docker buildx create --platform "linux/amd64,linux/arm64" --use
+
 # Build the docker image
 docker-build:
-	docker build -t ${IMG} .
+	docker buildx build --platform="linux/arm64,linux/amd64" -t ${IMG} .
 
 # Push the docker image
 docker-push:
@@ -116,4 +119,4 @@ bundle: manifests kustomize
 # Build the bundle image.
 .PHONY: bundle-build
 bundle-build:
-	docker build -f bundle.Dockerfile -t $(BUNDLE_IMG) .
+	docker buildx build --platform="linux/arm64,linux/amd64" -f bundle.Dockerfile -t $(BUNDLE_IMG) .